Advanced MathEasyOnly real cube root of eight
Advanced Math practice question
The equation x³ = 8 has exactly one real solution. What is it?
Answer: 2
2 × 2 × 2 = 8.
Common wrong answers
- If you answered 4
- 4 is 8 ÷ 2.
- If you answered 2.67
- 2.67 is 8 ÷ 3.
- If you answered -2
- (−2)³ = −8, not 8.
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