SOLUTION: Could you please help me with figuring out how to do this problem? r^2+3r=5 I cannot figure it out....Please and Thanks so much!!!

SOLUTION: Could you please help me with figuring out how to do this problem? r^2+3r=5 I cannot figure it out....Please and Thanks so much!!!

Algebra.Com

Question 208231: Could you please help me with figuring out how to do this problem?
r^2+3r=5
I cannot figure it out....Please and Thanks so much!!!
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
r^2+3r=5
r^2+3r-5=0
Using the quadratic equation we get:
r=(-3+-sqrt[3^2-4*1*-5])/281
r=(-3+-sqrt[9+20])/2
r=(-3+-sqrt29)/2
r=(-3+-5.385)/2
r=(-3+5.385)/2
r=1.1925 ans.
r=-3-5.385/2
r=-8.385/2
r=-4.19 ans.

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