SOLUTION: solve the following equation. express roots to the nearest hundredth. 2m^2-m-7=0

Question 7318: solve the following equation. express roots to the nearest hundredth.
2m^2-m-7=0
Found 2 solutions by ichudov, glabow:
Answer by ichudov(507) (Show Source): You can put this solution on YOUR website!

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=57 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 2.13745860881769, -1.63745860881769. Here's your graph:

Answer by glabow(165) (Show Source): You can put this solution on YOUR website!
The quadratic equation is your friend here.
a = 2
b = -1
c = -7
Go to it!

At the start, I get

Can you finish it? [do the work to get 2.14 and -1.64, or thereabouts]
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