1+4x+4x^2-16x^4
taking a wild guess you want to factor it ????
notice the first 3 terms form a perfect square
= (1 + 2x)^2 - 16x^4 , now we have a difference of squares
= (1 + 2x + 4x^2)(1 + 2x - 4x^2)
1+4x+4x^2-16x^4
1 answer