$8n-7=33$

$\left(3x^3+2x-1\right)+\left(x+2\right)$

$\int\left(1-sen7x\right)^2\:cos\:7xdx$

$\lim_{x\to0}\left(\frac{2\left(e^x+e^{-x}\right)}{sin2x}\right)$

$3b^4c-18b^3c^2+27b^2c^3$

$\lim_{x\to\infty}\left(\frac{3x-3}{x}\right)$

$\sin^2\left(150\right)+\cos^2\left(30\right)$