$5 ( 2 x + 1 ) ^ { 2 }$
$\frac{sin\left(15m\right)+sin\left(3m\right)}{cos\left(15m\right)+cos\left(3m\right)}$
$\frac{\sin\left(a\right)+\sin\left(2a\right)}{\sec\left(a\right)+2}$
$\:\left(7y+5\right)\left(-9+7y\right)$
$12ax+8ay$
$a^2-a^4+a^6-a^8$
$\int_e^xdx$
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