Question

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Answer 1

Answer:

Step-by-step explanation:

1 . x²+9x+18                    (factors of 18=3×9)

  =x²+3x+6x+18

  =x(x+3)+6(x+3)

  =(x+3)(x+6)

   =>x=-3 or -6

2. x²+12x+36

=x²+6x+6x+36

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

=(x+6)(x+6)

=>x=-6