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Algebraic Expressions Practice Questions

Last Updated : 23 Jul, 2025
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Algebraic expressions are fundamental components of algebra that represent quantities and relationships using variables, constants, and operations. They form the basis for solving equations and understanding mathematical relationships.

In this article, we will learn what algebraic expressions are and solve problems related to them.

What is Algebraic expression?

An algebraic expression can be simple or complex and describes a wide range of mathematical phenomena.

The algebraic expression does not contain an equality sign. It simply represents a value that can be calculated or simplified based on the variables' values.

Example:

  • 5x + 3
  • 2x2 - 4x + 1
  • \frac{2x^2 + 3x - 5}{x - 1}
  • \sqrt{x^2 + 4}, etc.

Distributive Property

Distributive property allows you to eliminate parentheses by distributing multiplication over addition or subtraction within the parentheses.

  • Formula:

a(b+c) = ab + ac

Combining Like Terms

Combine terms with the same variable to simplify the equation.

  • Formula:

ax + bx = (a+b)x

Important Concepts

Algebraic expression contains:

  • Variables: Symbols (such as x, y, z) that represent unknown values or quantities.
  • Constants: Fixed numerical values (such as 1, -5, 2.3) that do not change.
  • Operators: Symbols that indicate operations to be performed, including addition (+), subtraction (-), multiplication (× or ·), and division (÷ or /).
  • Exponents: Powers to which variables are raised (such as x2 or y3).

How to Solve Algebraic Expression

To solve practice questions follow the steps added below:

Step 1: Identify Terms then combine them together.

Step 2: Distribute and Combine

Step 3: Identify Common Factors

Step 4: Isolate the Variable

Step 5: Simplify the results

Algebraic Expressions Practice Questions

Question 1: Simplify Algebraic Expression: 4(a+3) -2(2a-5) + 3(a+1).

Solution:

Distribute the 4, -2, and 3, then combine like terms.

= 4a + 12 - 4a + 10 + 3a + 3

= 3a + 25

Question 2: Simplify Algebraic Expression: 7x+4x.

Solution:

= 7x + 4x

= 11x

Question 3: Simplify Algebraic Expression: 3(x+2)+4x

Solution:

= 3(x+2) + 4x

= 3x + 6 + 4x

= 7x + 6

Question 4: Simplify Algebraic Expression: \frac{5x^2 - 3x + 2}{x^2 + 2x + 1}​

Solution:

Factor denominator x2 + 2x + 1

Recognize that x2 + 2x + 1 = (x+1)2

So, we have:

\frac{5x^2 - 3x + 2}{(x + 1)^2}

Numerator 5x2- 3x + 2 cannot be easily factored further in a way that will cancel out with the denominator. Therefore, this fraction is already in its simplest form.

Question 5: Simplify Algeabric Expression: -2(3y-4)

Solution:

= -2(3y-4)

= -6y+8

Question 6: Simplify Algeabric Expression: 5a-3+2a+7

Solution:

= 5a + 2a - 3 + 7

= 7a + 4

Question 7: Simplify Algeabric Expression: \frac{(x - 1)^2}{x^2 - 2x + 1} + \frac{(x + 1)^2}{x^2 + 2x + 1}

Solution:

Simplify Each Term:

\frac{(x - 1)^2}{x^2 - 2x + 1}

​Notice that x2 - 2x + 1 = (x - 1)2

=\frac{(x - 1)^2}{(x - 1)^2}

= 1

Simplify Second Term:

\frac{(x + 1)^2}{x^2 + 2x + 1}

​Notice that x2 + 2x + 1 = (x+1)2

\frac{(x + 1)^2}{(x + 1)^2} = 1

Add simplified terms: 1 + 1 = 2

Hence \frac{(x - 1)^2}{x^2 - 2x + 1} + \frac{(x + 1)^2}{x^2 + 2x + 1} = 2

Question 8: Simplify Algeabric Expression: \frac{5x}{4} + \frac{3x}{4}

Solution:

= 5x/4 + 3x/4

Taking LCM of Denominator

= (5x + 3x)/4

= 8x/4 = 2x

Question 9: Simplify Algebraic Expression: 2x2+3x-4+x2-2x+1

Solution:

= 2x2 + x2+ 3x - 2x - 4 + 1

= 3x2 + x - 3

Question 10: Simplify Algebraic Expression: 2(x+3)-(x-4)+5(x+1)

Solution:

= 2(x+3) - (x-4) + 5(x+1)

= 2x + 6 - x + 4 + 5x + 5

= 6x + 15

Algebraic Expressions: Practice Problems

P 1: Solve the algebraic equation: \frac{4x^2 - 9}{2x - 3} \cdot \frac{3x + 3}{x^2 - 1}

P 2: Solve the algebraic equation: \frac{2x^2 - 8}{4x} + \frac{3x^2 + 6x}{2x}

P 3: Solve the algebraic equation: 7x+4x+2x+4y-2y+9x.

P 4: Solve the algebraic equation: \frac{5x - 7}{x + 2} - \frac{3x + 1}{x + 2}

P 5: Solve the algebraic equation: -2(3x-6)

P 6: Solve the algebraic equation: \frac{2x^3 - 6x^2 + 4x}{2x}

P 7: Solve the algebraic equation: \frac{6x^2 - 5x - 6}{x^2 - 3x}

P 8: Solve the algebraic equation: \frac{3x^2 - 5x + 2}{x^2 - x - 2}

P 9: Solve the algebraic equation: 9a-2a+74a - 6a

P 10: Solve the algebraic equation: \frac{x^2 + 2x + 1}{x^2 - 1} + \frac{x^2 - 1}{x^2 + 2x + 1}

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