√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

4400 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How would you solve a quadratic equation by factorising?


f(x)=2x^2 -8 What is the value of x if f(x)=0, x>0


f(x) = (x + 1)^2 and g(x) = 2(x - 1) Show that gf(x) = 2x(x + 2)


I find the percentage questions really hard, how do I answer the questions that will come up in exams?


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