Question

Express x²- 8x + 5 in the form (x-a)²-b where a and b are integers.

Answer 1

Explanation:

Divide -8 by 2 to get -4. You can then write the equation (x-4)^2, which is equal to x^2-8x+16. To get x^2-8x+5, we subtract 11 from this. We then get the equation (x-4)^2-11. a=4 and b=11