$3\left(a+22\right)=12a+30$
$\lim_{x\to\infty}.5^n$
$-2logxy$
$7-\left(+8-2\right)\:\cdot5$
$\left(x+5\right)\left(x+3\right)\left(x-1\right)\left(x+1\right)+9$
$\cos\left(x\right)^2\left(1+\tan\left(90-x\right)^2\right)$
$\frac{13\sin\left(x\:\right)-2\cos\left(2x\right)-10}{4\sin\left(x\right)-3}=4+\sin\left(x\right)$
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