Question

Which of the following is the expansion of (x + 5)^6?

A. x^6 + 5x^5 + 25x^4 + 125x^3 + 625x^2 + 3125x + 15625

B. x^6 + 30x^5 + 375x^4 + 2500x^3 + 9375x^2 + 18750x + 15625

C. None of the above

D. x^6 + 6x^5 + 15x^4 + 20x^3 + 15x^2 + 6x + 1

Answer 1

I'd solve it helping myself with: http://en.wikipedia.org/wiki/Pascal%27s_triangle
Easy peasy.

Answer 2

Answer is B, by the way ;)

Answer 3

thanx