Express [1+4(square root)7] /[ 5+ 2(square root)7] in the form m + n (square root)7 , where m and n are integers.

Using a whiteboard would help greatly with this question so that the steps can be seen clearly.1) Multiply both the numerator and the denominator by 5 - 2(square root)7 2) FOIL the top half of the equation to give 5 + 20(square root)7 -2(square root)7 -563) FOIL the denominator to give 25 + 10(square root)7 - 10(square root 7) - 284) Simplify the denominator to -35) Simplify further to give a final answer of 17-6(square root)7

Answered by Ella W. Maths tutor

6744 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

The curve C has equation 2x^2y+2x+4y-cos(pi*y)=17 A) Use implict differenciation to find dy/dx B) point P(3,0.5) lies on C, find the x coodinate of the point A at which the normal to C at P meets the x axis.


The gradient of a curve is given by dy/dx = 3 - x^2. The curve passes through the point (6,1). Find the equation of the curve.


How do you differentiate a polynomial?


Find dy/dx for y=5x^3−2x^2+7x−15


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 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences