$8b^3+5a^2+-7a^2+-3b^3+3c-b^2$

$\int_0^{\frac{\pi}{2}}\left(\frac{5\cos\left(x\right)}{\sqrt{sin\left(x\right)}}\right)dx$

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

$3x+2+4y+x+3x+2+3x+2+4y+x$

$\int21x^2.\ln\left(x\right)dx$

$\frac{4}{3}\left(2t^3-sin\left(3t\right)\right)^{\frac{1}{3}}\left(6t^2-3cos\left(3t\right)\right)^{\frac{1}{3}}$

$\frac{2x^2+11x+8}{x+4}$