SOLUTION: (x-3)(x+5)=7 i need to solve this problem. I tried factoring it out but it doesnt work so i need to use the quadratic equation to find the answers

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: (x-3)(x+5)=7 i need to solve this problem. I tried factoring it out but it doesnt work so i need to use the quadratic equation to find the answers      Log On


   

Question 362374: (x-3)(x+5)=7 i need to solve this problem. I tried factoring it out but it doesnt work so i need to use the quadratic equation to find the answers
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(x-3)(x+5)=7
x^2+5x-3x-15=7
x^2+2x-15-7=0
x^2+2x-22=0
discriminant =92
x1=+%28-2%2Bsqrt%2892%29%29%2F2
x1=3.79
x2=+%28-2-sqrt%2892%29%29%2F2
x2=-5.79
...
m.ananth@hotmail.ca