Write sqrt(75) in simplified surd form.

First you want to find a square number that is a factor of 75. In this case it is 25, as 25 x 3 = 75 . With this information you can expand the surd into:sqrt(25) x sqrt(3)
As 5^2 = 25, this can become:5 x sqrt(3) or 5sqrt(3)

KG

Related Maths GCSE answers

All answers ▸

Solve the simultaneous equations 4x + 7y = 1 and 3x +10y = 15.


what is the value of 27 to the power of -2/3


Make b the subject of the formula a = 3 - 2b


Evaluate 3 /5 + 1/ 4