Quantitative Aptitude ยท Mathematics

Algebraic Simplification

151 Questions

Algebraic simplification involves reducing mathematical expressions to their simplest forms using exponent rules and identities. Test takers must manipulate equations to find rapid solutions. This skill is frequently assessed in SSC, banking, and railway quantitative aptitude sections.

Exponent rulesSurd operationsAlgebraic identitiesTrigonometric simplificationLogical expressions

Algebraic Simplification Questions

Multiple choice

Simplify the expression: (2a^2 + 3ab) - (a^2 - 2ab)

  1. a^2 + 5ab

  2. a^2 - 5ab

  3. 3a^2 + 5ab

  4. 3a^2 - 5ab
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Combine like terms: (2a^2 - a^2) + (3ab + 2ab) = a^2 + 5ab.

Multiple choice

Simplify the expression: (x + 3)(x - 2)

  1. x^2 + x - 6

  2. x^2 - x - 6

  3. x^2 + 5x - 6

  4. x^2 - 5x - 6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the distributive property: (x + 3)(x - 2) = x^2 - 2x + 3x - 6 = x^2 + x - 6.

Multiple choice

Simplify the expression: (2x^2y^3)(3xy^2)

  1. 6x^3y^5

  2. 6x^3y^6

  3. 6x^2y^5

  4. 6x^2y^6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Multiply the coefficients and combine like terms: (2x^2y^3)(3xy^2) = 6x^3y^5.

Multiple choice

Simplify the expression: (a + b)^2

  1. a^2 + 2ab + b^2

  2. a^2 - 2ab + b^2

  3. a^2 + b^2

  4. a^2 - b^2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the formula for squaring a binomial: (a + b)^2 = a^2 + 2ab + b^2.

Multiple choice

Simplify the expression: (x - 3)^3

  1. x^3 - 9x^2 + 27x - 27

  2. x^3 + 9x^2 + 27x + 27

  3. x^3 - 9x^2 - 27x - 27

  4. x^3 + 9x^2 - 27x + 27
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the formula for cubing a binomial: (x - 3)^3 = x^3 - 3x^2(3) + 3x(3^2) - 3^3 = x^3 - 9x^2 + 27x - 27.

Multiple choice

Simplify the expression: (2x + 3y)(2x - 3y)

  1. 4x^2 - 9y^2

  2. 4x^2 + 9y^2

  3. 4x^2 - 6xy + 9y^2

  4. 4x^2 + 6xy + 9y^2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the difference of squares formula: (a + b)(a - b) = a^2 - b^2.

Multiple choice

Simplify the expression: (a^2 + 2ab + b^2) - (a^2 - 2ab + b^2)

  1. 4ab

  2. 2ab

  3. 0

  4. 4a^2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Combine like terms: (a^2 + 2ab + b^2) - (a^2 - 2ab + b^2) = a^2 + 2ab + b^2 - a^2 + 2ab - b^2 = 4ab.

Multiple choice

Simplify the expression: (x^2 - 4)(x^2 + 4)

  1. x^4 - 16

  2. x^4 + 16

  3. x^4 - 8x^2 + 16

  4. x^4 + 8x^2 + 16
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the difference of squares formula: (a + b)(a - b) = a^2 - b^2.

Multiple choice

Simplify the expression: (3a - 2b)^2

  1. 9a^2 - 12ab + 4b^2

  2. 9a^2 + 12ab + 4b^2

  3. 9a^2 - 6ab + 4b^2

  4. 9a^2 + 6ab + 4b^2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the formula for squaring a binomial: (a - b)^2 = a^2 - 2ab + b^2.

Multiple choice

Simplify the expression: (x + y + z)^2

  1. x^2 + y^2 + z^2 + 2xy + 2yz + 2xz

  2. x^2 + y^2 + z^2 + 4xy + 4yz + 4xz

  3. x^2 + y^2 + z^2 + 6xy + 6yz + 6xz

  4. x^2 + y^2 + z^2 + 8xy + 8yz + 8xz
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the formula for squaring a trinomial: (a + b + c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc + 2ca.

Multiple choice

Simplify the expression: (2x - 3y)(2x + 3y)

  1. 4x^2 - 9y^2

  2. 4x^2 + 9y^2

  3. 4x^2 - 6xy + 9y^2

  4. 4x^2 + 6xy + 9y^2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the difference of squares formula: (a + b)(a - b) = a^2 - b^2.

Multiple choice

Simplify the expression: (a^3 + b^3)(a - b)

  1. a^4 - b^4

  2. a^4 + b^4

  3. a^4 - a^3b + a^2b^2 - ab^3 + b^4

  4. a^4 + a^3b + a^2b^2 + ab^3 + b^4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the formula for the difference of cubes: (a + b)(a^2 - ab + b^2) = a^3 - b^3.

Multiple choice

Simplify the expression: (x^2 + y^2)^2

  1. x^4 + 2x^2y^2 + y^4

  2. x^4 - 2x^2y^2 + y^4

  3. x^4 + y^4

  4. x^4 - y^4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Use the formula for squaring a binomial: (a + b)^2 = a^2 + 2ab + b^2.

Multiple choice

Simplify the following expression using Ekadhikina Purvena Sutra: 12345 + 12346 + 12347 + 12348 + 12349.

  1. 62025

  2. 61025

  3. 63025

  4. 64025
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using the Ekadhikina Purvena Sutra, we can simplify the expression as follows: 12345 + 12346 + 12347 + 12348 + 12349 = (12345 + 12349) + (12346 + 12348) + 12347 = 24694 + 24694 + 12347 = 62025.

Multiple choice

Simplify the following expression using the Vyashtisamutpatti Sutra: (12345 + 6789) - (12345 - 6789).

  1. 13578

  2. 25134

  3. 12514

  4. 24690
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Vyashtisamutpatti Sutra states that the difference between two numbers can be found by subtracting the smaller number from the larger number. In this case, (12345 + 6789) - (12345 - 6789) = 12345 + 6789 - 12345 + 6789 = 13578.