Question

if A=x^2+4,and B=y^2-4, find:(A+B)^2​

Answer 1

Answer:

Step-by-step explanation:

A=x²+4,and B=y²-4

(A+B)²

= (x²+4+y²-4)²

= (x²+y²)²

= (x²)²+ (y²)² +2x²y²

= x⁴ +y⁴ + 2x²y²