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

Answered by Myles S. Maths tutor

9837 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Make a the subject of a+3=(2a+7)/r


Solve: x^8-17x^4+16


The recommended price of a ladder is £75. The ladder is sold in 2 shops, one with a 30% discount the other with a discount of 2/9. How much is the discount in the two shops and which is cheaper and by how much? Non-calculator


Alex wants to buy a new phone. It costs £280. Alex’s weekly wage is £420. He saves 15% of his wage each week. How many weeks does it take Alex to save enough money to buy the phone?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences