$\left(x^2-5\right)\left(x^4+5x^2+25\right)$

$=\frac{2x\sqrt{3-3x}}{e^{4x}\left(sin^2\left(x\right)\right)}$

$\int\left(\left(x+2\right)\left(x+4\right)^4\right)dx$

$7\log_{0.5}\left(\frac{1}{90}\right)=t$

$\int x^2\left(2+2x^3\right)dx$

$\frac{20x^3}{10x^2}$

$4.5^{5\:}$