Multiply and simplify the following: (x-8)^2

With these questions, I always think how to write out the expression in terms that are more simple to understand:
I would write out the expression as '(x-8)(x-8)' which really shows what the power of 2 is representing.Then we expand the brackets: each component must be times by one other.
The 'x' in the first bracket multiplies the 'x 'in the second bracket: x2The 'x' in the first bracket multiplies the '-8' in the second bracket: x2- 8x
The '-8' in the first bracket multiplies with the 'x' in the second bracket: x2 - 8x -8xThe '-8' in the first bracket multiplies with the '-8' in the second bracket (remember when a '-' and a '-' number multitiply one another, they become the postive product) : x2 -8x -8x + 64
Then simplify; x2 -16x +64

MS
Answered by Myles S. Maths tutor

10200 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Given a spinner divided in 3 sections numbered 1, 2 and 3, and that the arc of section 2 is double that of section one (~57.6 cm), calculate pi to 2 decimal places. The radius of the spinner is 30cm and the angle sub-intended by section 3 is 30 degrees.


Write 2x^2 + 16x + 26 in the form a(x + d)^2 + e where a, d, and e are integers.


How is frequency density calculated?


Write 2x^2 + 6x + 6 in the form a(x^2 + b) + c by completing the square.


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