Question 10
Quadratic EquationsIf x2 + 4 = 0, then x =
- A.4
- B.−4
- C.2
- D.−2
- E.none of these.
Show the answer and explanation
Answer: E (none of these.)
Explanation
x² = −4, and no real number has a negative square, so none of the given values works.
If x2 + 4 = 0, then x =
Answer: E (none of these.)
x² = −4, and no real number has a negative square, so none of the given values works.