Question

Find the two square roots of 121.

Answer 1

Answer: 11 and -11

Step-by-step explanation:

√121 = ±11

Answer 2

Answer:

11 and -11

Step-by-step explanation:

This problem can really only be solved either by way of a calculator or simple memorization. In this case, the product (121) is a perfect square root, meaning it has a whole number answer. One square root of 121 is 11. The second square root of 121 is -11.

$\sqrt{121} = 11$

$\sqrt{121} = -11$

You can check your work by squaring your answer and seeing whether it equals the product. Remember, a negative number times another negative number results in a positive answer.

$11^{2} = 121$

$-11^{2} = 121$