what is r^3-15r^2+54r=0
r3 - 15r2 + 54r = 0
Factor out the r:
r(r2 - 15r + 54) = 0
Complete the factoring:
r(r - 9)(r - 6) = 0
r = 0 or r = 9 or r = 6
its a problem that you need to find the exceptions or where it will not work by finding parenthess for example (x-2) ant he answer would be 2.
