$\frac{\left(a^{-4}b^{-6}\right)^{-7}}{\left(a^{-11}b^{8}\right)^{-9}}$

$\int_5^{-5}\left(\frac{4x}{2-8x^2}\right)dx$

$\int\left(e^{6x}\right)dx$

$\left(\frac{2x^5-2x^4-3x^3+3x^2+3x-3}{2x^4-3x^2+3}\right)$

$\cos\left(2x\right)\cdot\left(-4\csc\left(4x\right)^2\right)$

$\frac{3}{2}\int x^4\cdot\cos\left(x^5\right)dx$

$15^{5x-120}=1$