Advanced MathEasy–MediumGap between the two solutions of a square equation
Advanced Math practice question
The equation x² = 9 has two solutions. How far apart are they on the number line?
Answer: 6
The solutions are 3 and −3, which are 6 apart.
Common wrong answers
- If you answered 0
- 0 is their sum.
- If you answered 3
- 3 is one solution.
- If you answered 9
- 9 is x².
More Advanced Math questions
- Easy–Medium
If f(x) = 2x² − 3, what is f(4)? - Easy–Medium
Which expression is equivalent to (2x³)(3x⁴)? - Easy–Medium
What are the solutions to x² − 16 = 0? - Easy–Medium
Which expression is equivalent to (x + 5)²? - Easy–Medium
For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
What are the solutions to the equation 2(x − 3)² − 32 = 0 ?
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