Question

Use the identity (x + a) (x + b) = x2 + (a + b)x + ab to find the following products : (ii) (3x + 5y) (3x + 2y) (iii) (2x + 3) (2x + 5) (iv) (4p + 39) (4p +79) (v) (a + 3b) (a + 5b) (vi) (7x + 9) (7x + 8)​

Answer 1

This is the answer , with explanation