$\int\left(t^{2}-2\right)\sen\left(\frac{2}{3}t\right)dt$

$65a^3b^2-13a^2b^3$

$\frac{1}{\sqrt{7+8x^2}}$

$54\left(x^{2n}\right)^2\left(y^{-2n}\right)^2$

$\int\left(\frac{1}{x^2-11x+30}\right)dx$

$\int_{-1}^1\left(-2x+1\right)dx$

$f\left(x\right)=4x^{\left(3\right)}-2x^{\left(2\right)}-84$