$\left(3xy^2+5xy\right)^2$
$\left(z-5w\right)\left(2+5w\right)$
$x^4-30x+3\::\:x-3$
$\frac{9^2}{4}+ab+b^2$
$5x+11=-5-3x$
$4\sin^2\left(x\right)\cos\left(x\right)=2\cos\left(x\right)$
$\sec\left(x\right)=2.3495$
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