SOLUTION: Solve the following equation: 11y^2 +2y -1 = 0

Question 985926: Solve the following equation:
11y^2 +2y -1 = 0
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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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=48 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0.224009237739796, -0.405827419557978. Here's your graph:

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ANSWER: y=0.224 or y=-0.406
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