$4\left(4+25x^2\right)$
$\ln x+\ln\left(x+1\right)=\ln20$
$\int6x\sec^2\frac{x^2}{3}dx$
$y=\cos\left(\frac{1}{2x^{2}}+\frac{5}{x^{3}}+\frac{3}{x^{4}}\right)$
$25v^2+40vw+16w^2$
$-5\cdot4-2\left(9-36\right)$
$x^2+22=-12x$
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