$\left(7z^{10}-2\right)^2$
$\sec^2\left(x\right)\left(\sec\left(x\right)+1\right)\left(\sec\left(x\right)-1\right)$
$\frac{5i}{-2-6i}$
$\left(x+y\right)\left(x^2-xy+y^2\right)+x^2+2xy+y^2$
$\sqrt{75w^4}$
$8x^4-24x^2+18$
$\left(-4-\left(-5\right)+5\right)$
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