Question

Evalute the following (3/4x-2/3y)²

Answer 1

Answer:

9/16x^2 + 4/9y^2 - xy

Step-by-step explanation:

From the equation (a-b)^2 = a^2 + b^2 - 2ab

a=9/16x^2

b=4/9y^2

(3/4x)^2 + (2/3y)^2 - 2(3/4x)(2/3y)

9/16x^2 + 4/9y^2 - 12/12xy

9/16x^2 + 4/9y^2- xy