Factorise the following expression: x^2+12x-45

x^2+12x-45

x^2+15x-3x-45 (15x - 3x= 12x and 15 x -3=-45)

x(x+15)-3(x+15)

(x-3)(x+15) 

Answered by Aisha H. Maths tutor

2973 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

If 3 apples cost £1.50 and 4 oranges cost £3.20, how much do 5 apples and 3 oranges cost?


How do I find the prime factors of a number?


The average age of a group of 6 people is 21. One more person joins the group and the average is now 25. How old is the new member of the group?


Expand and simplify the following (x+4)(2x-3)=0


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