$\left(x+1\right)^2=1+2x$

$\left|\left(+6\right).\left(-3\right)-\left(+8\right).\left(-2\right)\right|^4+\left(-1-1\right)$

$\left(x^2+x^1\right)\left(x^2-x+4\right)$

$r\left(x\right)=\:\frac{x+1}{x\left(x+4\right)}$

$4y^2-16y+64$

$f\left(x\right)=3x^3\:\ln\left(x\right)$

$\lim_{x\to\infty}\left(\frac{x-\sin\left(x\right)}{x-\tan\left(x\right)}\right)$