find the value of x for when f(x)=0. f(x)=9x^(2)-4

since f(x)=0 write

9x2-4=0

move the x's to one side and the numbers to the other.

so 9x2=4

then to get rid of the 9 divide both sides by 9

so x2=(4/9)

then square root

so x=sqrt(4/9) and simply by taking positive square roots of 4 and 9

so x=2/3

Answered by Zivanayi S. Maths tutor

3448 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Express '6cos(2x) +sin(x)' in terms of sin(x).


How do you find the x co-ordinates of the stationary points of a curve with the equation y = 10x - 2x^2 - 2x^3


How do you differentiate 2^x?


For y=x/(x+4)^0.5, solve dy/dx


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