$\frac{\left(x-2\right)^n}{\left(2^n\left(n+1\right)\right)}$
$7+-2t+-9t-8$
$\int\:\frac{x^2+1}{x^2}dx$
$\left(2x+3\right).\left(2x-5\right)-\left(x-3\right)^2$
$x\left(2ydx\right)=0.5$
$6x^2+31x+18$
$32a^2+26z+8az\:+\:12az+48z^2\:+\:12a^2$
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