Question

Which of the following gives all of the sets that contain square root 9

Answer 1

See below.

Explanation:

You haven't given the list but the square roots of 9 are 3 and -3.

Answer 2

`\rightarrow √(9)=√(3 * 3)\\\\=3`

`\rightarrow √(9)\\\\=√(-3 * -3)\\\\=-3`

→Set that contain square root of 9 = {3, -3}

→The Meaning of square root is that when number multiplied by itself gives the original number.for example: 4 ×4=16 , so square root of 16 is 4.Similarly , -4 × -4=16

→So there are two square root of 16 which are 4 and -4.