Question

(a²+ b²) (-a²+b²) find using identities

Answer 1

Step-by-step explanation:

(a+b) (a+b) - (a+b) (a-b)

(a+b) (a-b)

${a}^{2} - {b}^{2}$

Answer 2

Step-by-step explanation:

split both terms then you get(a+b)(a+b)-(a+b)(a-b) where (a+b)and -(a+b) are cancel out so we get only (a+b)(a-b) and we know (a square - b square) =(a+b)(a-b)