Work Step by Step
Factor out the GCF x to get $x(x^2+8x+16)$. Factor the trinomial to get $x(x+4)(x+4)$. Check by multiplying the factors: $x(x^2+4x+4x+16) \\=x(x^2+8x+16) \\=x^3+8x^2+16x$
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