3.Important Algebraic Formulas

Question 1

(a + b)^2

Answer 1

a^2 + 2ab + b^2

Question 2

(a - b)^2

Answer 2

a^2 - 2ab + b^2

Question 3

(a^2 - b^2)

Answer 3

(a + b)(a - b)

Question 4

(a + b + c)^2

Answer 4

a^2 + b^2 + c^2 + 2ab + 2ac + 2bc

Question 5

(a + b)^3

Answer 5

a^3 + 3a^2b + 3ab^2 + b^3

Question 6

(a - b)^3

Answer 6

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

Question 7

(a^3 + b^3)

Answer 7

(a + b)(a^2 - ab + b^2)

Question 8

a^3 - b^3

Answer 8

(a - b)(a^2 + ab + b^2)