$49x\left(-20\right)$

$\left(5\right)\left(^3\right)^2$

$p^3\frac{dy}{dx}=\left(p^4+1\right)\cos$

$\sin\left(x\right)\left(e^{-y}+1\right)dx\:=\left(1+\cos\left(x\right)\right)dy$

$prove\:2sin\left(\theta\:\right)cos\left(\theta\:\right)=-1$

$\left(x\right)\left(2-\sqrt{y}\right)$

$y=\left(x+2\right)^2\cdot\left(x-3\right)\:$