A square root of a number is one of its two equal factors?

Answer 1

That is correct.

I would say, the square root of a number is another number that, when you multiply it by itself, gives you the number you started with.

Remember that a positive number always has two square roots, one positive and one negative. The square roots of 49 are 7 and -7, since 7x7=49, and also -7x-7=49.