-3.33/(80/9)
(1-x)(1+x)
(-1/3)^2 -9
$\infty$ $\pi$
3(1/3)^2 -5(1/3) -2
$$\prod_{a}^{b}{C}$$ $\sm_a}{bC$ $sqt{Bo}$ $^{}$
52,31 / (1- 0.03)
e
solve the equations
4...
(-7)-(+2)-(-4)
2 $a^{0.5}$