Savannah built a rectangular pen for her goat that was 20 yards long and 15.4 yards wide. What is the area of this pen?

the correct answers i think are b. and d.

give me brainliest if it is correct!

answer is 33

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