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) 

AH
Answered by Aisha H. Maths tutor

3751 Views

See similar Maths 11 Plus tutors

Related Maths 11 Plus answers

All answers ▸

How do I add decimal numbers?


At the performances last month, a total of seven-hundred and forty-four thousand, eight hundred and one drinks were sold at the theatre's restaurant bar. The manager wants to know how many drinks were sold, rounded to the nearest thousand drinks.


The function f is defined by f (x) = e ^(x+2), where x is any real number. Find f ^-1(x) and state its domain.


What is the sum of the factors of 21?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning