$\tan^2\left(x\right)-\sin^2\left(x\right)=\frac{\sin^2\left(x\right)}{\cos^2\left(x\right)}$

$\left(4\cdot1\cdot5\right)^2$

$\int\:\:\left(t\right)\left(t+n\right)dt$

$\int\frac{2w-2w^3}{w^4-2w^2}dw$

$\left(-\frac{3}{5}bc^4\right)\left(\frac{10}{3}a^3b^2c^3\right)$

$\sin\left(60\right)=\frac{9}{x}$

$\int x^3\sqrt{x+16}dx$