$-2\left\{1-4m\right\}=3m+8$

$x^3+1;x=3$

$\lim_{n\to\infty}3+\frac{2n+6}{3n+1}$

$\lim_{x\to0}\left(\frac{3x-3\sin\left(x\right)}{x^2}\right)$

$\int2\cos^3\left(5x\right)dx$

$\left(\frac{3}{4}x+\frac{1}{2}\right)\left(\frac{3}{4}x-\frac{1}{2}\right)$

$\int\frac{12}{4sen\left(x\right)+3cos\left(x\right)}dx$