Question

(3x+5) (3x-1) using (x+a) (x+b) = x^2+ (a+b) x +ab​

Answer 1

Answer:

9x^2 +12x -5

Step-by-step explanation:

(3x+5) (3x-1) using (x+a) (x+b) = x^2+ (a+b) x +ab​

(3x+5) (3x-1) = (3x)^2 (5+(-1)) +(-1*5)

9x^2 +12x -5

Answer 2

(X*a)(x+b)
=x^2+x(a+b)+ab
=9x^2+3x(5+-1)+-5
=9x^2+3x*4-5
=9x^2+12x-5