$\int\left(4x^6-2x^3+7x-4\right)dx$

$\:\frac{4a^2}{25}-\:121$

$55.464-6.12$

$\int_{35}^{15\pi}8\sin\left(\frac{x}{10}\right)dx$

$4x^3-8x^2\:\:entre\:2x$

$\sqrt{12}+\sqrt{3}-\sqrt{27}-\sqrt{3}$

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