For the polynomial below, the -2 is a zero.
f(x)= x^3 - 2x^2 - 6x + 4
Express f(x) as a product of linear factors.
Use fractions or radicals in answers not decimals.
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(x^3 - 2x^2 - 6x + 4)/(x+2)=x^2-4x+2
so x^3 - 2x^2 - 6x + 4=(x+2)(x-2+sqrt2)(x-2-sqrt2)
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