$u=\frac{x}{y^2}$
$16 \cdot 2 ^ { 3 } + 4 - 2$
$4x^2-1\ge0$
$csc\left(x\right)\left(cos\:x\:+\:sin\:x\right)\:+1\:=cot\:x\:+2$
$3c\left(b+a\right)-6d\left(b+a\right)$
$v-5>-4$
$5^{12}-23^6$
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