Question

Solve x2 + 9x + 18 =​

Answer 1

Answer:

x2+(6+3)x+18=0

x2+6x+3x+18=0

x(x+6)+3(x+6)=0

(x+3)(x+6)=0

so x=-3and x=-6

Answer 2

ANSWER

x² +9x+18=x²+6x+3x+18

=x²+6x+3x+3×6

=x(x+6)+3(x+6)

=(x+3)(x+6)