SOLUTION: how do you find the discriminant of each quadratic equation then state the number and type of solution of 3r^2+10=-7r-7r^2?

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Question 174706: how do you find the discriminant of each quadratic equation then state the number and type of solution of 3r^2+10=-7r-7r^2?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
discriminant D is b%5E2-4acwhere a,b are the coefficents of x%5E2,x,and c is the constant.
:
3r%5E2%2B10=-7r-7r%5E2
:
10r%5E2%2B7r%2B10=0
:
D=7%5E2-4%2810%29%2810%29
:
D=49-400=-351
:
when D is less than zero the solutions will be complex and there will be 2 solutions