$\int\left(2x^2+6\right)^7\left(5x\right)dx$
$7abc=7a+7b+7c$
$2x^3+2x^2$
$10x^{2\:}100x\:+\:250$
$328.652\cdot3.02$
$x^2+9<0$
$\frac{1-2\csc\left(x\right)}{\cot\left(x\right)}=\tan-2\sec\left(x\right)$
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