Solve the following algebraic equation: x^2 + 6x + 9 = 0

I would explain on the whiteboard how to factorise itleading them to having two brackets, (x + 3) and (x+3). Could also be written as (x+3)^2then teach them on whiteboard how to solve the equation(x+3)^2 = 0hence x+3 = 0hence x = -3OR-(x+3) = 0-x -3 = 0x + 3 = 0so again, x = -3So, the solution is x = -3would use whiteboard to explain all this

IJ
Answered by Isabella J. Maths tutor

1692 Views

See similar Maths KS3 tutors

Related Maths KS3 answers

All answers ▸

Where does the graph x^2-3x-4 cross the x axis?


Solve Simultaneous equations: 3x + 4y = 23 & 2x + 3y = 16


4(3x-7) = 8


calculate the volume and surface area of a beach ball with a 30cm diameter.


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