$\int_0^3\left(4x\right)dx$
$\frac{x+1}{x-2}<4$
$\left(z^{k-1}+w^{3-k}\right)\left(z^{k-1}-w^{3-k}\right)$
$\frac{\sin^2a}{\cos^2a}+\cos$
$-66-x=-61$
$\sqrt{3^2+\left(-4\right)^2}+\left(-3\right)^2+1$
$\frac{4-y^2}{y-2}$
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