$4\cos\left(x\right)+3=6$
$w-3=-12$
$25x^2-100x-100=0$
$\frac{dy}{dx}=\sqrt{x}^2+4$
$\cos\left(a\right)=\frac{-3}{\sqrt{13}}$
$16a^2-ab^2$
$4\left(t-2\right)^2-5\left(t-2\right)+5$
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