Question

the value of 2 X + 3 y whole square + 2 x minus 3 ywhole square is dash

Answer 1

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

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

=(4x^ 2 + 9y^2 + 12xy ) + ( 4x^2 + 9y^2 - 12xy)

=8x^2 + 18y^2