$\left(-1+7v\right)^2$
$2\left(\cos\left(0.5x\right)\right)^2=1$
$3x-5\cdot3x+5$
$-3a^2b^3+12a^2b^3$
$\int\left(\frac{3-2x}{5x+9}\right)dx$
$\int\frac{\left(5+\sqrt{x}\right)}{5-\sqrt{x}}dx$
$\left(b+8\right)\left(b+10\right)$
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