Question

simplify - (2x+3y)whole sq + (2x-3y) whole sq​

Answer 1

Answer:

(2x+3y)^2+(2x-3y)^2

4x^2+9y^2 +12xy+4x^2+9y^2 -12xy

[identity used:(a+b)^2=a^2+b^2+2ab

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

8x^2+18y^2