$-2\left(-4x-1\right)+5\left(4x+2\right)$
$\left(2a^2-2a^4\:b\right)^2$
$\frac{x^4}{x}$
$64z^2-16z+1$
$2x\cdot3x^4$
$\sin^2\left(x\right)+cos\left(2\cdot x\right)=\frac{1}{3}$
$x^2+5x=14$
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