$\frac{dp}{dt}+2tp=0$

$\left(2.25\cdot10^{300}\right)\cdot\left(8\cdot10^{-299}\right)$

$\frac{8x^2+32x+30}{2x+5}$

$x\left(1+y^2\right)^{\frac{1}{3\:}}dx=y\left(1+x^2\right)^{\frac{1}{3}}dy$

$\left(5x+9\right)\left(7x-1\right)=4$

$\left(x^3y^5-7m^{10}\right)\left(x^3y^5+7m^{10}\right)$

$\frac{x+y}{y}$