$-4c+2b+8b+3$

$7x+5=-100$

$xcos^2\left(y\right)dx+tan\left(y\right)dy=0$

$sin\left(\frac{\pi}{6}+x\right)=\frac{1}{2}\left(cos\:x+\sqrt{3}sinx\right)$

$\lim_{x\to\infty}\left(x\left(\sqrt{e}-1\right)\right)$

$\lim_{x\to\pi}\left(\frac{\left(sin\:3x\right)}{\left(sin\:2x\right)}\right)$

$b^2+b^2+b^3+b$