SOLUTION: Compute the value of the discriminant and give the number of real solutions to the quadratic equation. 2x^2-8x-1=0

SOLUTION: Compute the value of the discriminant and give the number of real solutions to the quadratic equation. 2x^2-8x-1=0

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Question 347971: Compute the value of the discriminant and give the number of real solutions to the quadratic equation.
2x^2-8x-1=0
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
From we can see that , , and

Start with the discriminant formula.

Plug in , , and

Square to get

Multiply to get

Rewrite as

Add to to get

So the discriminant is

Since the discriminant is greater than zero, this means that there are two real solutions.

If you need more help, email me at jim_thompson5910@hotmail.com

Also, feel free to check out my tutoring website

Jim
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