$sec\left(x\right)\sin\left(x+y\right)$
$3x^2+7x+4=0$
$4s+40$
$81x^4-\frac{16}{81}y^8$
$-10+3-\left(-8\right)+4-3$
$\frac{160x\:-36}{5x+3}$
$\frac{10.22}{.5}=9.72$
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