F(X)= 4/(x-3) g(x)= (x+2)/x solve fg(a)= 1

4/(x-3)*(x+2)/x= 4x+8/ x2 -3x
sub in a for x4a+8/a2-3athen equate to 1: 4a+8/a2-3a=1Times the bottom half of the equation up4a+8=a2-3aThe move the 4a+8 across to get a2-7a-8=0Factorise (a+1) (a-8)

Answered by Esther J. Maths tutor

7060 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Which has greater area? A parallelogram with base length 10cm and perpendicular height 6cm, or a circle of diameter 8cm.


Write 4x^2+18x+2 in form a(x+m)+n.


At whats points does the graph of (t^2)+8t+7 intersect the x axis


A ladder 6·8m long is leaning against a wall. The foot of the ladder is 1·5m from the wall. Calculate the distance the ladder reaches up the wall.


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences