Asked by Bob
Solve the equation: 4x^2 + 100 = 0
Here is my work:
4x^2 + 100 = 0
- 100 - 100
4x^2 =0
/4 /4
x = -5 or 5.
Did I do this correctly?
Here is my work:
4x^2 + 100 = 0
- 100 - 100
4x^2 =0
/4 /4
x = -5 or 5.
Did I do this correctly?
Answers
Answered by
Steve
Not quite. You know that x^2 is always positive. How do you add two positive numbers to get zero?
4x^2 + 100 = 0
x^2 + 25 = 0
x^2 = -25
x = ±5i, not ±5
4x^2 + 100 = 0
x^2 + 25 = 0
x^2 = -25
x = ±5i, not ±5
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.