$\left(x+2\right)\left(x+9\right)-\left(x+7\right)\left(x+4\right)$
$\left(2c^2\cdot c^3\right)^2$
$2y''\:+\:6y'-176y\:=\:0$
$3x-x+6x^2-2-4+6+5x$
$1200\cdot30$
$\int x\cdot e^{214x}dx$
$\frac{1+\sec\left(x\right)}{\sec\left(x\right)}$
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