$\int_1^2\left(x+1\right)e^{2x}dx$
$x^2+8x-5$
$\cot\left(a\right)^2-\cos\left(a\right)^2=\cot\left(a\right)^2\cos\left(a\right)^2$
$9n^2+6n-8$
$2^{x-1}=8$
$b^2-ab$
$\left(j+x\right)^6$
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