if a²+1/a=5 then find a³+1/a³
3x-y =20
6x-10y=-120
60+3(5,6+6)/4
if (x/2)+7=17
x=?
3×3-3÷3+3
12pa
\[ \vec{r}_1 = 2\hat{i} + 5\hat{j} \] \[ |\vec{r}_1| = \sqrt{2^2 + 5^2} \approx 5.39 \, \text{units} \]
12x+21x=
3n +1