$x^2+12x+1$
$\int e^{\left(4x^2+1\right)}8xdx$
$x^2-2x-1>0$
$\frac{\tan\left(a+b\right)-\tan b}{1+\tan\left(a+b\right)\tan b}=\tan a$
$\left(-6wu^4\right)^2$
$tan^2x+4tanx-5=0$
$\frac{\left(\left(2a+3b\right)^2-\left(2a-3b\right)^2\right)}{4b}$
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