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b. x= +/- √1/4 = +/- 1/2 x=1/2 x=-1/2
c. ( x- 0,5) ( x+0,5) =0 x=0,5 x=-0,5
d. x-1 = +/- √49 x-1 = +/- 7 x-1=7 x=8
x-1=-7 x=-6
e ( x-) ²=48:3
(x-3)² =16 x-3 = +/- √16 x-3 =+/- 4
x-3=4 x=7
x-3 =-4 x=-1
x=9
b)x^2=1:4
x^2=0.25
x^2=0.5^2
x=5
c)x^2=0.25+0
x^2=0.25
x^2=0.5^2
x=0.5
d)(x-1)^2=7^2
x-1=7
x=7+1
x=8
e)o sa dea un nr cam urat si greu de rezolvat