Completing the square

Question 1

How do you complete the square?

Answer 1

Half the value before x, put it in the brackets making sure you know its squared, expand, work out what value needs to be added or subtracted to get the end of equation value

Question 2

x2-2x-3

Answer 2

(x-1)2-5

Question 3

x2 – 8x + 5 =

Answer 3

(x-4)2-11