$\left(\sqrt{x+25}-5\right)\left(\sqrt{x+25}+5\right)$
$\left(\:4a^3\:+\:5b^2\right)^2$
$\cos^2x-2\cos x=0$
$7-x>5$
$\int_{\frac{1}{2}}^x\left(x^2\:\left(\frac{ln^6}{1}\right)\right)dt$
$x+3y+2z=2$
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