factorise (a+1)^4 -1?

Question: help? btw -1 is not inside the power thingy… Best Answers: Answer by TomVdifference of two squares: (a+1)^4 -1 = [(a+1)² + 1][(a+1)² - 1] = [(a+1)² + 1](a+1 – 1)(a+1+1) = a[(a+1)²+1](a+2) … Answer by Uday Teja( a + 1 )^4 – 1 = [ ( a + 1 )^2 + 1 ] […] PR News Crimovies