Advanced MathEasyEquation with two given solutions
Advanced Math practice question
Which of the following equations has both x = 5 and x = −5 as solutions?
- A. x² = 25Correct
- B. x + 5 = 0
- C. 2x = 10
- D. x² = 10
Answer: A. x² = 25
Both 5² and (−5)² equal 25.
Why the other answers are wrong
- B. x + 5 = 0
- Only x = −5 satisfies x + 5 = 0.
- C. 2x = 10
- Only x = 5 satisfies 2x = 10.
- D. x² = 10
- x² = 10 has solutions ±√10, not ±5.
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