$3\left(x+1\right)+5=5\left(x+2\right)$
$\int_0^{\frac{\pi}{2}}\left(\sec^4\left(\frac{t}{2}\right)\right)dt$
$\log_x\left(12-32x\right)=2$
$z^2-169$
$\frac{-2x^3-4x^2-4x+7}{x+1}$
$p^2-95p+2100$
$\frac{x^3-x^2}{7-x^2}$
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