-2x^2+bx -5 Determine the b-value that would ensure the function has two real root.
1 answer:
Answer:
Step-by-step explanation:
Given is the quadratic function
In order to have two real roots the discriminant should be posivive
- D = - b² - 4ac
- D = - b² - 4(-2)(-5) = - b² - 40
We need D > 0
- -b² - 40 > 0
- b² + 40 < 0
- b² < - 40
There is no solution as b² is never negative
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