Do you know your squares?

Algebra Level 1

Let x x be a real number not equal to 1. If the square of x x is 1, then what is x x ?


The answer is -1.

Sohail Hameed by Sohail Hameed , 49, USA

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1 solution

We know that the square root of a number may be a positive or negative number. Thus, if the number isn't 1, it must be -1.

3 Helpful 0 Interesting 0 Brilliant 0 Confused

But wait you can't calculate it. Its not possible.

Mythreyi Venkataraman - 5 years, 7 months ago

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− 1 × − 1 = 1 -1 \times -1 = 1

A Former Brilliant Member - 1 year, 3 months ago

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