$\left(a^{x+1}+2bx\right)\left(2bx-a^{x+1}\right)$
$7\cdot7-8$
$\int\frac{x}{\left(x^2-1\left(x-2\right)\right)}dx$
$84.761+2.10+5.324$
$\frac{\cot\left(x\right)}{\left(1+\csc\left(x\right)\right)}=\sec\left(x\right)-\tan\left(x\right)$
$-x^2+6x+7=0$
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