Question

b2-2b=24 solve by completing the square

Answer 1

start off by taking half of -2 (the b term), then squaring it

(-2/2)^2 = (-1)^2 = 1

Answer 2

you then add 1 to both sides

b^2 - 2b + 1 = 24+1

b^2 - 2b + 1 = 25

the left side is now a perfect square, so it factors to (b-1)^2 giving you

(b-1)^2 = 25

Answer 3

I'm sure you see how to finish up