Bob's desk had 11/12 grams of dust on it. He wiped away 1/12 grams of the dust. How many grams of dust are left on his desk? Write your answer as a fraction in simplest form

5/6 are left

Step-by-step explanation:

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