9c^2 + 1/9c^2 -2 + 9c - 1/c
16s2 + 1/16s² - 2 + 16s - 1/s
$x^{2}$ - 5$x$ +6
round 61 to the nearest ten
find $$\int_{\1}^{\2}(\1) d/x^2+6x+5x$$
2x*3xy
9 1/2+6 1/6
Work out an estimate for the value of 83 x 1.72
1/10+1/20+1/30+1/40+1/60lcm
sqrt (3*sqrt(5)+4*sqrt(2)-sqrt(10))>3
