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15 votes
For what value of x is the equation below true?

x2+4x +5=0

2 Answers

1 vote
The answer is -2+/- square root of -1.
User Ankur Chauhan
by
5.3k points
3 votes

Hi there!


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Using the discriminant formula, we can determine if this equation is ever true:

b² - 4ac

Plug in the a, b, and c values from the equation:

(4)² - 4(1)(5)

16 - 20 = -4 < 0

Since the discriminant is less than 0, there are no zeros to the equation. Thus, the equation is never true.

User Akber Choudhry
by
5.4k points