$\left(a^n+1\right)\cdot\left(a^n-1\right)$
$9\cdot742$
$\frac{-8a^5b^{11}}{2b^8a^7}$
$313.01+52.28+83.83+113.89+190+64.75+14.22+204.81+70.18+75.07+244.41$
$2x^2-3x-43$
$\frac{9}{16}n^2-\frac{3}{2}n+1$
$6\left(b+74\right)=-18$
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