Factor
x^{2}\left(x^{2}-2z\right)^{2}
Evaluate
\left(x\left(x^{2}-2z\right)\right)^{2}
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x^{2}\left(x^{4}-4x^{2}z+4z^{2}\right)
Factor out x^{2}.
\left(x^{2}-2z\right)^{2}
Consider x^{4}-4x^{2}z+4z^{2}. Use the perfect square formula, a^{2}-2ab+b^{2}=\left(a-b\right)^{2}, where a=x^{2} and b=2z.
x^{2}\left(x^{2}-2z\right)^{2}
Rewrite the complete factored expression.
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