Evaluate the expression, or state that the expression is not a real number.

Question

squareroot 100-36

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

A. The expression is a real number. 100-36 = blank (Type an integer or a decimal.)

B. The expression is not a real number.

Answer 1

To evaluate the expression \( \sqrt{100 - 36} \):

1. First, calculate \( 100 - 36 \): \[ 100 - 36 = 64 \]

2. Next, find the square root of 64: \[ \sqrt{64} = 8 \]

Since both calculations result in a valid real number, we conclude that the expression is a real number.

The correct choice is:

A. The expression is a real number. \( 100 - 36 = 64 \)