$cos\left(x\right)^2=\frac{1-cos\left(x\right)^2}{tan\left(x\right)^2}$
$7 x - 2 > 3 x - 14$
$\left(2m^2+3n^3\right)^2$
$-3+18+3+3$
$5\:-4.\left(-3\right)+8.\:2$
$3n+5=32$
$x^7-2x^{6\:}+\:x^5$
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