$\frac{\left(1-cos\left(4x\right)\right)}{2}=sin^4x$
$9\left(x+1\right)-3x\left(x+1\right)^2$
$\lim_{x\to10}\left(2x\cdot logx^3\right)$
$9x^2+3x-12$
$\left(12x-4z\right)^2$
$ab^2\sqrt[3]{a^2b}$
$2x-7\le-18x-1$
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