SOLUTION: find the discriminant. how many real solutions does the equation have? -4x^2-4=8x

Question 1071181: find the discriminant. how many real solutions does the equation have? -4x^2-4=8x
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Discriminant?

Now discriminant? But here, not really needed because you know that quadratic expression is factorable. ONE REAL SOLUTION. Why? You know the quadratic there is a perfect square.

--
Discriminant here is .
That is what you get when the quadratic expression is a perfect square trinomial.
Answer by MathTherapy(10552) (Show Source): You can put this solution on YOUR website!

find the discriminant. how many real solutions does the equation have? -4x^2-4=8x

Discriminant: {{b^2 - 4ac}}}
a = - 1 ; b= - 2 ; c = - 1

As discriminant = 0, there will be: .
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