Respuesta :

apologiabiology
remember
ab+ac=a(b+c)
find common factors

factor each to find a
27f^2g^2=3*3*3*f*f*g*g
18f^2g^3=2*3*3*f*f*g*g*g
-3f^2g=-1*3*f*f*g

common group is
3*f*f*g=3f^2g
so rewrite as
3f^2g(9g)+3f^2g(6g^2)+3f^2g(-1)
undistribute
(3f^2g)(9g+6g^2-1)
rearange inner
(3f^2g)(6g^2+9g-1)

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