16Hit 1600
Advanced MathEasyUndoing a square root

Advanced Math practice question

For what value of x does √x equal 6?

Answer: 36

Square both sides: x = 6² = 36.

Common wrong answers

If you answered 3
3 halves the 6; undo a square root by squaring: 36.
If you answered 6
If x were 6, √x would be about 2.45, not 6.
If you answered 12
12 doubles the 6; squaring gives 36.

More Advanced Math questions

Not affiliated with the College Board. SAT is a trademark of the College Board.