$\left(4x-7y\right)^3$
$\lim_{x\to5}\left(2x-1\right)\left(\sqrt{x+4}\right)$
$\lim_{x\to0}\left(\frac{\tan\left(6x\right)}{x}\right)$
$7x^2+2x-14=0$
$\left(-15\right)\cdot\left(-14\right)\cdot0$
$\cos\left(x\right)\left(\sec\left(x\right)+\cot\left(x\right)\cdot\csc\left(x\right)^2\right)$
$\left(2+5\right)^2+1$
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