Yareli went scuba diving. she started 10 feet below the surface. she descended 18 feet, rose 5 feet, and descended 12 more feet, write and evaluate an expression to find yareli's final depth

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