Answer:
x=-1,3
Step-by-step explanation:
0=(x-1)^2-4
Add 4 to each side
0+4=(x-1)^2-4+4
4 = (x-1)^2
Take the square root of each side
sqrt(4) = sqrt((x-1)^2)
±2 = x-1
Separate into 2 equations
2 = x-1 -2 = x-1
Add 1 to each side
2+1 = x-1+1 -2 +1 =x-1+1
3 =x -1 =x
There are two solutions
x=-1,3
