3$\sqrt{\ 6}$
2=2
6(517)-(41)(478)
7*7x+3*3x+5*x=12600
5-x = 100-2x
y-x^2/xy x x/1+xy
2^a + 2^b = 640, a+b = ?
$\sqrt{\ 162}$/x=x $\sqrt{18}$
6(91)-(21)2
6(433)-(21)(108)
6(91)-(21) $a^{b}$ 2