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1 vote
Determine the values of y in the equation y² = 121.

Pre-Algebra 8th grade

All I know that it is not 11

1 Answer

6 votes

+11, -11

The reason the answer is not 11 is not because you did the math wrong its because you gave the answer is just 11.

even when you square a negative number you multiply two negatives to make a positive so it would have to be -11 and +11.

This applies to whenever you square a number, the answer can always be two possibilities the positive and the negative.

User Camembert
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