Question

19) Find the product of (x-3) (x+5) using appropriate identity.​

Answer 1

Answer:

(X+a) (x+b) identity will be used in this question

Answer 2

(x-3)(x+5)

= (x)² + (-3 + 5)x + (-3)(5)

= x² +2x - 15

Using identity [ (x +a) (x + b) = x²+(a+b)x + ab]