Sagot :
(x-4)^2 -25=0
(x-4)^2 = 25
sqrt(x-4)^2 = sqrt 25
x-4=5 and -5
x-4=5
x=9
x-4=-5
x=-1
(-1,9)
:)
(x-4)^2 = 25
sqrt(x-4)^2 = sqrt 25
x-4=5 and -5
x-4=5
x=9
x-4=-5
x=-1
(-1,9)
:)