$3m-6+m^2-5m+1$
$cos\left(2x\right)=\frac{4}{5}$
$4x^2+9x-100=0$
$\sqrt{1-11x}=32$
$\left(\sqrt{x+1}+\sqrt{x-1}\right)^2$
$2y^2-8y+1$
$\frac{1}{\csc^2\left(x\right)}+\frac{1}{\sec^2\left(x\right)}=1-\tan^2\left(x\right)$
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