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 ▸

How to solve simultaneous equations?


Solve the following system of equations simultaneously to find the values of x, y and z. 2x+3y+4z=3, -x-y+z=1, 2x+y-z=0


Solve simultaneously x + y = 1, 2x + 3y =9


Prove that the square of an odd number is always 1 more than a multiple of 4