Question

(x+7)(x+3) using identity

Answer 1

(x + 7)(x + 3)

= x² + (7 + 3)x + (7)(3)

... (x + a)(x + b) = x² + (a + b)x + ab

= x² + 10x + 21

Answer 2

Answer:

using the identity (x+a)(x+b)= x^2 +(a+b)x+ab

(x+7) ( x+3) = x^2 +10x +21