Question

a square + b square A + B A minus b bracket

Answer 1

I hope your question is :

( a² + b² ) ( a + b ) ( a - b )

Answer :

By using identity ( x + y ) ( x - y ) = x² - y²

= ( a² + b² ) ( a² - b² )

= (a²)² - (b²)²

= a⁴ - b⁴

Answer 2

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

we know that

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

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

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

=( a^2×a^2 -b^2×a^2 +b^2×a^2 -b^2×b^2

we know that a^m × a^n = a^(m+n)

so

a^4-a^2b^2+a^2b^2-b4

a^4-b^4