How can we simplify sqrt(48) - 6/sqrt(3) ?

Observing that 48 = 24 * 2 = 1222 = 443, we can write square root of 48 as being square root of 443, which means that sqrt(48) = 22sqrt(3).Now, we can multiply the new result 22sqrt(3) with sqrt(3) such that we can have a common denominator on the bottom.So, 22sqrt(3)sqrt(3)/sqrt(3) - 6/sqrt(3) = (22*3 - 6)/sqrt(3) = 6/sqrt(3).If we want our answer to look prettier, we can multiply again with sqrt(3) such that the new result could look as 6 * sqrt(3) /3 = 2sqrt(3).

Answered by Dorian G. Maths tutor

6853 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

A particle P is projected vertically upwards from a point 20m above the ground with velocity 18m/s, no external forces act on it other than gravity. What will its speed be right before it hits the ground? Give your answer to one decimal place.


A mass of 3kg rests on a rough plane inclined at 60 degrees to the horizontal. The coefficient of friction is 1/5. Find the force P acting parallel to the plane applied to the mass, in order to just prevent motion down the plane.


Differentiate f(x)= x^3 + x^(1/3)-2


Differentiate x^3 + 6x + 1


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy