How do you solve #(x-1)^2=4#?
1 Answer
Sep 11, 2016
Explanation:
Since we have a squared value on the left we require to take the
#color(blue)"square root"# of both sides of the equation.
#sqrt((x-1)^2)=+-sqrt4#
#rArrx-1=+-2# solve:
#x-1=+2rArrx=2+1=3# solve:
#x-1=-2rArrx=-2+1=-1#
