2r-7>6+r
prove that 3/2 root 5 is irrational
200,40,8,1.6,0.42
x + 3 over x² - 9 PLUS x + 3 over x² - 9
((12^2+5^2)^.5)^3
((12^2+5^2)^1/2)^3
10:5,3:2
3+2+9
