Question

(3x +4y) (3x - 4y) - (3w+4y) ^2 please give me answer

Answer 1

Given Equation is (3x + 4y)(3x - 4y) - (3x + 4y)^2

We know that (a + b)(a - b) = a^2 - b^2

⇒ (3x)^2 - (4y)^2 - (3x + 4y)^2

⇒ 9x^2 - 16y^2 - [9x^2 + 16y^2 + 24xy]

⇒ 9x^2 - 16y^2 - 9x^2 - 16y^2 - 24xy

⇒ -32y^2 - 24xy.

Hope it helps!