Advanced MathEasy–MediumEquation with exactly one real solution
Advanced Math practice question
Which of the following equations has exactly one real solution?
- A. x² = 0Correct
- B. x² = 1
- C. x² = −1
- D. x² = 4
Answer: A. x² = 0
Only x = 0 squares to 0.
Why the other answers are wrong
- B. x² = 1
- x = 1 and x = −1.
- C. x² = −1
- No real solution.
- D. x² = 4
- x = 2 and x = −2.
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