$\frac{1}{\sin\left(x\right)}\cdot\frac{1}{\sec\left(x\right)}$
$9a+54$
$\frac{dy}{dt}+5y=15$
$\frac{4}{3}-3x<-15$
$121a^8-16$
$-2mn^2+5mn-mn^2+3mn$
$3x-2>25$
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