$y\:=\:2x\sqrt{\frac{t+x}{t-x}}$
$y'=\frac{3x^2+4x+2}{2y-2}$
$( a ) ( 3 a - x ^ { 2 } )$
$\int_0^{3\pi}\cos\left(b\right)db$
$\frac{\left(343-x^3\right)}{7+x}$
$\cos^2\left(x\right)+\frac{\tan^2}{1+\sec\left(x\right)}+\sin^2\left(x\right)=\sec\left(x\right)$
$-\left(-5\:\right)\:+\:8\:+\:\left(-8\right)\:+\:\left(-4\right)\:+\:\left(-7\right)\:+\:\left(-6\right)\:+\:\left(-200\right)$
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