\(a,=4x\left(x+2\right)\\ b,=\left(x-3\right)\left(x+3\right)\\ c,=x^2\left(2x-3\right)+\left(2x-3\right)=\left(2x-3\right)\left(x^2+1\right)\)
a)4x2+8x b)x2-9
=4x(x+2) =x2-32
=(x-3)(x+3)
c)2x3-3x2+2x-3
=2x3+2x-(3x2+3)
=2x(x2+1)-3(x2+1)
=(2x-3)(x2+1)