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

$5x^2+31x+48$

$-\left(+2\right)+\left(-4\right)-\left(+3\right)-\left(-3\right)+\left(-7\right)$

$9xy+\left(6x^{2}+6xy+10\right)$

$x^2-\left(x-4\right)^2=128$

$\sqrt[3]{8-1\cdot8^{3^{-1}}+16^{2^{-2}}}$

$\lim_{x\to infinity}\left(\frac{cos3x}{e^x}\right)$