what is the value of x? (x-3)^2=x^2+(-3)^2

x=0 and b=-1

(x-3)^2=x^2+(-3)^2    simplify and rearrange

x^2 - 6x + 9 - x^2  - 9  = 0

-6x  = 0     divide both sides by -6

x = 0

1 / [2b - 2]   =  -1 / 4      cross-multiply

2 - 2b  = 4      rearrange

-2  = 2b    divide both sides by 2

b = -1