SOLUTION: I'm stuck on this one:
determine whether the following equation has a real or complex solution
√2x^2 -4x-7√2=0
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Question 193566: I'm stuck on this one:
determine whether the following equation has a real or complex solution
√2x^2 -4x-7√2=0
Answer by orca(409) (Show Source): You can put this solution on YOUR website!
You need to find the value of the discriminant of the equation.
If the discriminant > = 0, then the equation has real solutions. Otherwise only complex solutions.
Recall that
The discriminant = for equation
So
The discriminant =
=
=
= > 0
So the equation has 2 real roots
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