SOLUTION: Factor x^2-4x-5

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Factor x^2-4x-5      Log On


   



Question 372604: Factor x^2-4x-5
Answer by Jk22(389) About Me  (Show Source):
You can put this solution on YOUR website!
x^2-4x-5 = (x-5)(x+1), by Viete's formula (x+a)(x+b) = x^2 + (a+b)x + ab, here a = -5, b=1