$\sqrt{49}+\sqrt{121}$
$\frac{1-\frac{sin^\theta}{cos^\theta}}{sec^2\:\theta}$
$\frac{dy}{dx}=5xy^8$
$sin\left(2x\right)\cdot cos\left(x\right)+cos\left(2x\right)\cdot sin\left(x\right)$
$\frac{dy}{dx}=50\left(y^2+4\right)$
$y2+13y-30$
$\left(-22\right)\cdot\left(-4\right)+\left(-22\right)\cdot\left(-3\right)$
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