Fully simplify this equation; 3x^3 - x(3x+36) = 0

The first step is to multiply out the bracket

3x3 - 3x- 36x = 0

Then remove the common factor 3x

3x(x2 - x - 12) = 0

Then factorise the bracket, by looking for two numbers which multiply to give -12, and add to give -1

3x(x - 4)(x + 3) = 0

RO
Answered by Rachel O. Maths tutor

3240 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Factorise x^2 + 5x + 6


Find the equation of the line that passes through ( 5 , -4 ) and (3,8).


2x+y=18, x-y=6; Solve the simultaneous equations


Solve these simultaneous equations: 3y + x = 18 and x - 4y = -10.


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:

© 2025 by IXL Learning