$\frac{dy}{dx}=tan\left(x+y\right)$
$x^2+3x-154$
$-7-\left(-15\right)$
$\lim_{x\to\infty}\left(\left(\frac{x+3}{x+2}\right)^{2x+1}\right)$
$x^2+4x+4=49$
$x\frac{dy}{dx}=\frac{-1-y}{1+y}$
$\left(\frac{22}{2}\right)^2$
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