√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

4286 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Daniel bakes 420 cakes. He bakes only vanilla cakes, banana cakes, lemon cakes and chocolate cakes. 72 of the cakes are vanilla cakes. 35% of the cakes are banana cakes. The ratio of the number of lemon cakes to the number of chocolate cakes is 4:5 Work


A level - Find the coordinates of the stationary point of the curve with equation : (x+y-2)^2 + e^y -1


Re-arrange [4x+ 9t + 8s= 3g] to make x the subject of the formula


The point P has coordinates (3, 4) The point Q has coordinates (a, b) A line perpendicular to PQ is given by the equation 3x + 2y = 7 Find an expression for b in terms of a.


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