SOLUTION: I have this quadratic equation and I can not figure it out; -0.2x squared + 12x + 11. I have to find the x and y coordinates. Help please.

Question 287996: I have this quadratic equation and I can not figure it out; -0.2x squared + 12x + 11. I have to find the x and y coordinates. Help please.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Do you see an equal sign? I don't see an equal sign. So nothing is equated and so there is no equation.
-0.2x^2+12x+11
Which x and y coordinates do you want? There is no y.
Do you see a "y"?
You really should copy the problem as given and not try to invent it.
(x-60.9031) (x+0.903074) = 0

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=152.8 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: -0.903074280724887, 60.9030742807249. Here's your graph:

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