√3(√30 + √8) can be simplified into the follwing format: x√10 + y√6 where are x and y are integers. Find the value of x and y.

Begin by expansion (√a x √b = √ab): √3 x √30 = √90 and √3 x √8 = √24. Therfore we have: √90 + √24. Simplify roots (√a^2√b). The question tells us we need x√10 so therefore √90 = √9√10 (9x10 = 90) and we need y√6 so therefore √24 = √4√6 (4x6 = 24). Simplify square roots further: √9 = 3 or -3 and √4 = 2 or -2. The questions aks for x and y to be integers (positive whole numbers) so the final answer is:3√10 + 2√6 therefore x = 3 and y = 2

HD
Answered by Holden D. Maths tutor

4479 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

The equation of a curve is y = ax^2 + 3x + c where a and b are integers. The curve has a minimum point at (1,1), find a and c


How is frequency density calculated?


Find values for x and y from two simultaneous equations: 2x + y = 5 and 3x + y = 7


Paul organised an event for a charity. Each ticket for the event cost £19.95 Paul sold 395 tickets. Paul paid costs of £6000 He gave all money left to the charity. (a) Work out an estimate for the amount of money Paul gave to the charity.


We're here to help

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

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning