Question

what are the last three terms of (a - b)^5

Answer 1

@ganeshie8 can u help

Answer 2

look at the attached gif it is of pascals triangle
explained here:

http://www.mathsisfun.com/pascals-triangle.html
So,











When your problem has a minus in it, like (a - b)^5, the signs in your answer will alternate, positive, then negative, then positive, then negative, etc.

(a-b)^5

a^5-5a^4b + 10a^3b^2 - 10a^2b^3 + 5a^4b^3-b^5