$7\cdot1-8\cdot4-3\cdot9$

$\int_0^1\left(\frac{32}{\left(x^2+1\right)^3}\right)dx$

$\frac{-2x^3+7x^2+9x}{x}$

$\lim_{x\to0}\left(\frac{e^{2x}-e^{-2x}}{ln\left(x+1\right)}\right)$

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

$\left(-8\right).\left(-3\right)$

$\int_1^{1.2}\left(c^x\right)dx$