Together, two pipes can fill a tank in 3 hours. One pipe alone can fill the tank in 5 hours.
How long does it take for the other pipe to
fill the tank alone?

irrational, cannot

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb