Solve for z
z=-5x\left(x^{2}-5x+5\right)
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z=\left(-5x^{2}+25x-25\right)x
Use the distributive property to multiply x^{2}-5x+5 by -5.
z=-5x^{3}+25x^{2}-25x
Use the distributive property to multiply -5x^{2}+25x-25 by x.
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