Advanced MathEasy–MediumEquation with a square root and a constant
Advanced Math practice question
Which of the following values of x satisfies √(3x + 6) = 3?
- A. 1Correct
- B. 3
- C. −1
- D. 5
Answer: A. 1
3x + 6 = 9 gives x = 1.
Why the other answers are wrong
- B. 3
- 3(3) + 6 = 15, and √15 is not 3.
- C. −1
- 3(−1) + 6 = 3, and √3 is not 3.
- D. 5
- 3(5) + 6 = 21.
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
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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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