Expand the brackets (3x^2 + 6x + 7)(x - 3)

To help the student understand how to expand the brackets I would start by splitting the equation to:3x2(x - 3) + 6x(x - 3) + 7(x - 3)I then would ask the student to expand these brackets to:3x3 - 9x2 + 6x2 - 18x + 7x - 21Then I would ask the student to collect the like terms and simplify the equation to:3x3 - 3x2 - 11x - 21

JD
Answered by Jasmine D. Maths tutor

3271 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the simultaneous equations for x and y: 2x+4y=-12 and y=-x-2


Factorise 9a^2+6ab.


The equation of line L is y = 3x - 2 and the equation of line Q is 3y - 9x + 5 = 0, show these two lines are parallel


I’ve been taught two methods for solving pairs of simultaneous equations. When should I use which?


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