x3 - x2 + 16x - 16 = x2(x - 1) + 16(x - 1) = (x2 + 16)(x - 1)
x^3-x^2+16x-16 = (x^3-x^2)+(16x-16) = x^2.(x-1) + 16.(x-1) = (x-1)(x^2+16)
\(x^3-x^2+16x-16\)
\(=x^2\left(x-1\right)+16\left(x-1\right)\)
\(=\left(x-1\right)\left(x^2+16\right)\)
\(x^3-x^2+16x-16\)
\(=x^2\left(x-1\right)+16\left(x-1\right)\)
\(=\left(x-1\right)\left(x^2+16\right)\)
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