In a triangle, the measure of the first angle is five times the measure of the second angle. The measure of the third angle is 40 less than five times the measure of the second angle. What is the measure, in degrees, of each angle?

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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

it would be a on edgenuit y

the diagram below is your final answer