Question

evaluate the following:
(2x - 3y)2
(3x + 4y)2​

Answer 1

Step-by-step explanation:

(2x - 3y)^2

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

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

= 4x^2 + 9y2^ - 12xy

(3x + 4y)^2

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

=(3x + 4y)^2=(3x)2+ ( 4y)^2+2(3x)(4y)

= 9x^2+16y^2+24xy