SOLUTION: Very stuck, please help me please Solve {{{ x^2+18x-4=0 }}} The solution is x = ???

Question 359581: Very stuck, please help me please
Solve

The solution is x = ???
Answer by vleith(2983) (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=340 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0.219544457292887, -18.2195444572929. Here's your graph:

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