Question

using indententies solve the following (3x-4Y)2​

Answer 1

Answer:

(3x+4y)² find the answer by using identities

Solution

By applying this identity

(a+b)²= a²+b²+2ab to solve this question

So,

(3x+4y)^2⟹(3x+4y) 2

(3x)^2+(4y)^2+2×3x+4y

⟹(3x) 2+(4y) 2

+2×3x+4y

9x^2+16y^2+24xy⟹9x

2+16y 2+24xy

Identities

(a+b)² = a²+b²+2ab

(a-b)² = a²+b²-2ab

a²-b² = (a+b)(a-b)

a³-b³ = (a-b)(a²+ab+b²)

a³+b³ = (a+b)(a²-ab+b²)

(a+b)³ = a³+b³+3ab(a+b)

(a-b)³ = a³-b³-3ab(a-b)