Question

show that
(a²-b²) ²
by using formula
(a+ b)²
(a-b)²
(a+b) =a²+b²+2ab
(a-b)² =a²+b²-2ab
a=b²
b=b²​

Answer 1

Answer:

(a+b)²+(a-b)²

= (a²+2ab+b²)+(a²-2ab+b²)

Remove the brackets.

=a²+2ab+b²+a²-2ab+b²

=2(a²+b²)

Therefore, (a+b)²+(a-b)² = 2(a²+b²)

Hope this answer helps