Expand and simplify (x-5)(x+6)
$\frac{\ x-2}{\ 6}$- $\frac{\ x-4}{\ 8}$ =9
2x - y - z = 2; x + y - 2z = 1; x - 2y + z = 1
(x-5)(x+6)
x^2- $\sqrt{2}$ x+ $\sqrt{6}$ =0
2.5 + (-3.5)
simplify
10x
x-6/5=30
simplify\:\frac{d}{dx}\left(\frac{3}{4}\pi \:r^3\right)=-k\left(4\pi \:r^2\right)
