$\:\:\:-3n\:-\:7n\:+\:11\:-\:2\:\:$
$x^2+2xy+y^2-16r$
$4-\left(-3\right)\cdot\left(-2\right)$
$\left(\frac{7}{2}x+\frac{8}{5}y\right)\left(\frac{7}{2}x-\frac{8}{5}y\right)$
$11x-23<-3+6x$
$x^2+8x-8x-64$
$\sin\left(2x\right)\cdot\cos\left(x\right)=2\cdot\sin^3\left(x\right)$
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