$x^2+1000\left(-x+10\right)=0$

$69+713.0308+.981+510$

$\left(5ab+2\right)\left(5ab-2\right)$

$\left(2v-10\right)\left(v+10\right)$

$\left(\frac{1}{6}x^3-1\right)+\left(x^2-\frac{1}{2}x+\frac{5}{6}\right)+\left(-\frac{1}{3}x^3-\frac{5}{6}x^2+x-\frac{3}{4}\right)$

$4\left(-1+j\right)$

$6a^{x+3}+8a^{x+1}$