Algebra Examples

$y = \sqrt{31 - 27}$

Step 1

Subtract $27$ from $31$ .

$y = \sqrt{4}$

Step 2

Rewrite $4$ as $2^{2}$ .

$y = \sqrt{2^{2}}$

Step 3

Pull terms out from under the radical, assuming positive real numbers.

$y = 2$