$\left(1-t\right)^2+2t\left(1-t\right)+2t^2$

$5+7+9-12-32+31+-5$

$e=\left(x+4\right)\left(4-x\right)+\left(\sqrt{x}+1\right)\left(\sqrt{x}-1\right)\left(x+1\right)$

$x+7<8$

$\left(m-n\right)-\left(m+n\right)$

$-3\left(-6\right)+2\left(5\right)\left(-3\right)+\left(5\right)$

$8x^3\:+10$