$\ln\left(x+1\right)-\ln\left(x-2\right)=\ln\left(x\right)$
$\frac{1}{\sqrt{y}}dy=xdx$
$169g^2+52gx+4x^2$
$\:65\:-\:\left(-65\right)\:-\:85$
$\left(2x^2+4x-8\right)+\left(x^2-3\right)$
$6x^3\:4x^3\:5x^3$
$2^2-80x-975$
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