Question

Factorize x^2 + 9x + 20​

Answer 1

Step-by-step explanation:

=x^2 + 9x + 20

=x^2 + (5x + 4x) + 20

= x^2 + 4x + 5x + 20

= x (x + 4) + 5 (x + 4)

= (x+4) (x+5)

(1) x+4=0 (2) x+5=0

x = (-4) x = (-5)

Answer 2

Answer:

-4,-5

Step-by-step explanation:

x^2+5x+4x+20

x(x+5)+4(x+5)

(x+5)(x+4)

x=-4,-5