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

2125 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

(2x + 3)/(x-4) - (2x - 8)/(2x + 1) = 1


A roll of card has an area of 43 m^2. A postcard has an area of 125 cm^2. How many post cards can be cut from the roll, assuming there is no wastage? (calculator question)


2.5 x 100


In a tennis club, there are twice as many male members as female members. 1/3 of the males wear hats when they play. 1/4 of the females wear hats when they play. 66 members wear hats. How many members does the club have?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences