SOLUTION: hmm..ok. I got, 2(r^2+3r-40)=0 2(r-5) (r+8)=0 r-5= 0 r+8= 0 +5 +5 -8 -8 r=5 r=-8....? Is that good

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: hmm..ok. I got, 2(r^2+3r-40)=0 2(r-5) (r+8)=0 r-5= 0 r+8= 0 +5 +5 -8 -8 r=5 r=-8....? Is that good      Log On