Question

1 (a + b)(a - b) (a² + ab + b2) (a? – ab + b2)​

Answer 1

a2 – b2 = (a – b)(a + b) * (a+b)2 = a2 + 2ab + b2 * a2 + b2 = (a – b)2 + 2ab * (a – b)2 = a2– 2ab + b2 * (a + b + c)2 = a2 + ... and (3 + 2)(3 - 2) = (5)(1) = 5.