$5\sin\left(8x\right)\sin\left(14x\right)$
$3xy-2x+2xy$
$40n+300\ge100n+120$
$\frac{4a^2b^7}{2a^5b^7}$
$\int\left(2t^2+\sqrt{t}-6\right)dt$
$x\left(x+5\right)\ge0$
$\cos\left(2x\right)=\frac{\tan\left(x\right)}{\tan\left(2x\right)-\tan\left(x\right)}$
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