A=18-[-(-3+2)+2]-[-10]
6 + 4r + 2 - 9r
6 $a^{b}$ x/2 if 6x=9
$\sqrt{18a^6}$ $\sqrt{2a^3}$
9h + 8p - 5h - 2p + 10 - 10 - 4h
4x+3-x+5
9x + 2y - 4x + 11 - 6y + 5
(5678 + 15627) base8 covert to base 2
$\sqrt{10a}$ $\sqrt{2a^4}$
m=g/f ,make f the subject
