Solving the Indicated Operation

Oct 13, 2025 by wbrum.org 83 views

Introduction

Algebraic expressions are a fundamental concept in mathematics, and solving them requires a deep understanding of various mathematical operations and techniques. In this article, we will focus on solving a specific algebraic expression, which involves adding two fractions and then simplifying the resulting expression. We will also explore how to fill in the missing terms in a quadratic expression.

Solving the Indicated Operation

The given expression is:

${ \frac{2x}{3x-4} + \frac{x-1}{2x-2} }$

To solve this expression, we need to find a common denominator for the two fractions. The least common multiple (LCM) of the denominators is (3x - 4)(2x - 2). We can rewrite each fraction with this common denominator:

${ \frac{2x(2x-2)}{(3x-4)(2x-2)} + \frac{(x-1)(3x-4)}{(3x-4)(2x-2)} }$

Now, we can add the two fractions:

${ \frac{2x(2x-2) + (x-1)(3x-4)}{(3x-4)(2x-2)} }$

To simplify the numerator, we can expand and combine like terms:

${ \frac{4x^2 - 4x + 3x^2 - 4x + 4}{(3x-4)(2x-2)} }$

Combining like terms in the numerator, we get:

${ \frac{7x^2 - 8x + 4}{(3x-4)(2x-2)} }$

Filling in the Missing Terms in a Quadratic Expression

The given quadratic expression is:

${ \frac{7x^2 + [?]x + }{(2x + )(3x + )} }$

To fill in the missing terms, we need to determine the coefficients of the quadratic expression. Since the denominator is a product of two binomials, we can assume that the numerator is also a product of two binomials. Let's assume the numerator is (ax + b)(cx + d), where a, b, c, and d are constants.

Expanding the numerator, we get:

${ ax^2 + (ad + bc)x + bd }$

Comparing this with the given quadratic expression, we can see that:

${ ad + bc = 7 }$ ${ bd = 0 }$

Since bd = 0, we can conclude that either b = 0 or d = 0. Let's assume b = 0, which means the numerator is (ax)(cx + d). Expanding this, we get:

${ acx^2 + adx }$

Comparing this with the given quadratic expression, we can see that:

${ ac = 7 }$ ${ ad = 0 }$

Since ad = 0, we can conclude that either a = 0 or d = 0. Let's assume a = 0, which means the numerator is (cx)(d). Expanding this, we get:

${ cdx^2 }$

Comparing this with the given quadratic expression, we can see that:

${ cd = 7 }$

Since cd = 7, we can conclude that c = 7 and d = 1.

Conclusion

In this article, we solved a specific algebraic expression by adding two fractions and then simplifying the resulting expression. We also explored how to fill in the missing terms in a quadratic expression by determining the coefficients of the quadratic expression. By following these steps, we can solve complex algebraic expressions and gain a deeper understanding of mathematical concepts.

Final Answer

The final answer to the given expression is:

${ \frac{7x^2 - 8x + 4}{(3x-4)(2x-2)} }$

The final answer to the quadratic expression is:

${ \frac{7x^2 + x + 1}{(2x + 1)(3x + 1)} }$

Note that the final answer to the quadratic expression is not unique, as there may be other possible solutions depending on the values of the constants a, b, c, and d.

Introduction

Algebraic expressions are a fundamental concept in mathematics, and solving them requires a deep understanding of various mathematical operations and techniques. In this article, we will provide a Q&A guide to help you better understand algebraic expressions and how to solve them.

Q: What is an algebraic expression?

A: An algebraic expression is a mathematical expression that consists of variables, constants, and mathematical operations. It is a way to represent a mathematical relationship between variables and constants.

Q: What are the different types of algebraic expressions?

A: There are several types of algebraic expressions, including:

Polynomial expressions: These are algebraic expressions that consist of variables and constants, and are typically written in the form of ax^n + bx^(n-1) + ... + c, where a, b, c, and n are constants.
Rational expressions: These are algebraic expressions that consist of variables and constants, and are typically written in the form of a/b, where a and b are polynomials.
Exponential expressions: These are algebraic expressions that consist of variables and constants, and are typically written in the form of a^x, where a is a constant and x is a variable.

Q: How do I simplify an algebraic expression?

A: To simplify an algebraic expression, you can follow these steps:

Combine like terms: Combine any like terms in the expression, such as 2x + 3x = 5x.
Simplify fractions: Simplify any fractions in the expression, such as 2/4 = 1/2.
Cancel out common factors: Cancel out any common factors in the expression, such as 2x/2 = x.

Q: How do I add and subtract algebraic expressions?

A: To add and subtract algebraic expressions, you can follow these steps:

Add like terms: Add any like terms in the expressions, such as 2x + 3x = 5x.
Subtract like terms: Subtract any like terms in the expressions, such as 2x - 3x = -x.
Combine fractions: Combine any fractions in the expressions, such as 2/4 + 3/4 = 5/4.

Q: How do I multiply and divide algebraic expressions?

A: To multiply and divide algebraic expressions, you can follow these steps:

Multiply like terms: Multiply any like terms in the expressions, such as 2x * 3x = 6x^2.
Divide like terms: Divide any like terms in the expressions, such as 2x / 3x = 2/3.
Simplify fractions: Simplify any fractions in the expressions, such as 2/4 = 1/2.

Q: What is the order of operations in algebraic expressions?

A: The order of operations in algebraic expressions is:

Parentheses: Evaluate any expressions inside parentheses first.
Exponents: Evaluate any exponents next.
Multiplication and Division: Evaluate any multiplication and division operations from left to right.
Addition and Subtraction: Evaluate any addition and subtraction operations from left to right.

Conclusion

In this article, we provided a Q&A guide to help you better understand algebraic expressions and how to solve them. We covered topics such as simplifying algebraic expressions, adding and subtracting algebraic expressions, multiplying and dividing algebraic expressions, and the order of operations in algebraic expressions. By following these steps and practicing with examples, you can become more confident and proficient in solving algebraic expressions.

Final Tips

Practice, practice, practice: The more you practice solving algebraic expressions, the more confident and proficient you will become.
Use online resources: There are many online resources available to help you learn and practice algebraic expressions, such as Khan Academy, Mathway, and Wolfram Alpha.
Seek help when needed: Don't be afraid to ask for help if you are struggling with a particular concept or problem.