Suppose that the sum of the three vectors u, v, and w shown in the figure is the zero vector. If |w|=140, find |u| and |v|. Carry your intermediate computations to at least 4 decimal places. Round your answers to the nearest tenth.

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