Advanced MathEasy–MediumSolutions of a quadratic in a word setting
Advanced Math practice question
A number squared, plus the number, equals 12. Which of the following could be the number?
- A. 3Correct
- B. 4
- C. 6
- D. 12
Answer: A. 3
3² + 3 = 12. The other solution is −4.
Why the other answers are wrong
- B. 4
- 4² + 4 = 20.
- C. 6
- 6² + 6 = 42.
- D. 12
- 12² + 12 = 156.
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For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
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