SOLUTION: solve: b^2+13b-12. is it factorable or not? and solve it. Thank you very much

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: solve: b^2+13b-12. is it factorable or not? and solve it. Thank you very much      Log On


   

Question 704754: solve: b^2+13b-12. is it factorable or not? and solve it. Thank you very much
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
A little bit of trial effort to fill in this format will help.
(b_______(?))(b______(?))=b^2+13b-12

What two integers give a product of -12 and a sum of +13?
Try 2, -6; -2, 6; 3, -4; -3, 4; 1, -12; -1, 12. Any of those pairings work?

NOT factorable; at least not the way you'll want. Roots for the expression as a quadratic equation are %28-13-sqrt%28217%29%29%2F2 and %28-13%2Bsqrt%28217%29%29%2F2.