solve x^2 >3(x+6) (4 mks)

x2>3(x+6)Firsty expand brackets --> x2>3x+18Then make one side = to 0 ---> x2-3x-18>0Solve the quadratic (x+3)(x-6)>0find the solutions when =0 x=-3 and x=+6Then sketch the graph or draw number line to find the inequality region x<-3x>6

Answered by Lucy C. Maths tutor

2184 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Plot out y= x^2 - x - 2 for values of x from -3 to +3 and label the turning point


Factorise and solve x^2-8x+15=0


How can I use the Pythagoras' Theorem to work out the length of a missing side of a triangle?


Maths A-level Question, Rates of change involving a cylindrical vessel.


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