Question

Is the square root of 18 a rational number?

A) Yes
B) No
C) Only for certain values of x
D) It depends on the method used

Answer 1

The square root of 18 is not a rational number.

Step-by-step explanation:

The square root of 18 is not a rational number. A rational number is a number that can be expressed as a ratio of two integers. The square root of 18 is an irrational number because it cannot be expressed as a ratio of two integers.

1. First, find the prime factors of 18. The prime factors of 18 are 2, 3, and 3.
2. Next, pair the prime factors into two groups. In this case, we have one pair of 3's.
3. Finally, take one factor from each pair and multiply them together. In this case, we have 2 * 3 = 6.

Therefore, the square root of 18 is equal to 6.