Roots that cannot be written as exact decimals are called surds. Leaving an answer in surd form means the answer is exact. This square has an area of 3 m 2. Calculate the length of each side.

add or subtract a surd, swap the + or – sign and multiply the numerator and denominator by this expression. For example, if the denominator includes the bracket \((5 + 2\sqrt{3})\), then ...