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Efectuati in R ecuatiile.
(x-1)²=4
(1-2x)²=8
(x+1)²-16=0
27-3(x+2)²=0
(2x+3)²+100=0





















E


















Răspuns :

[tex] (x-1)^{2} =4=\ \textgreater \ x-1=+-2=\ \textgreater \ x-1=2=\ \textgreater \ x-1=-2[/tex][tex]=\ \textgreater \ x_{1} =3; x_{2}=-1 [/tex]
[tex](x+1)^{2} -16=0=\ \textgreater \ (x+1)^{2} =16=\ \textgreater \ x+1=+-4[/tex][tex]=\ \textgreater \ x+1=4=\ \textgreater \ x+1=-4=\ \textgreater \ x_{1} =3; x_{2} =-5[/tex]
[tex]27-3(x+2)^{2} =0=\ \textgreater \ -3(x+2)^2=-27=\ \textgreater \ (x+2)^2=+-3[/tex][tex]=\ \textgreater \ x+2=3=\ \textgreater \ x+2=-5=\ \textgreater \ x_{1} =1; x_{2} =-5[/tex]
[tex](2x+3)^2+100=0=\ \textgreater \ (2x+3)^2=-100=\ \textgreater \ 2x+3=+- \sqrt{-100} [/tex]  x∉R
[tex]Succes[/tex]