write 2/(3+root(5)) in the form a + b*root(5), where a and b are rational numbers.

You would first multiply the expression by (3-root(5))/(3-root(5) - which equals 1 - to get (6-2root(5))/14 which then equals 3/7 - (1/7)*root(5) and you are done.

MG
Answered by Max G. Maths tutor

4893 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

When will I use this in my everyday life?


How to write an introduction for an essay in Russian


Make x the subject of the formula: 3x - 2 = y + 10


solve the simultaneous equations 8x + 2y = 48 , 14x + 6y = 94


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences