$\left(4a-\frac{1}{4}\right)^4$
$\int\frac{6+7x}{1+x^2}dx$
$6x^2-16x\:=\:20\:+\:2x^2$
$\left(x+y-2z\right)\left(x-y+2z\right)$
$\left|\frac{3}{5}\cdot\:\frac{10}{9}\cdot\:\frac{15}{4}\right|^3$
$k+\frac{10}{2}$
$8a+10t-a+9t+3$
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