Toán Lớp 7: `|x+1|+(y-2)^2=1` giúp mik với

Question

Toán Lớp 7:  |x+1|+(y-2)^2=1 giúp mik với

kymmailien · Answer

mytamhoang · Answer

$Theo$ $đề,$ $ta$ $c&oacute;$ $:$ $|$ $x$ $&ndash;$ $1$ $|$ $+$ $($ $y$ $+$ $2$ $)^{2}$  $=$ $1$   $V&igrave;$ $|$ $x$ $&ndash;$ $1$ $|$  $  &ge; $ $0$   $=>$ $($ $y$ $+$ $2$ $)^{2}$ $&ge;$ $0$   $=>$ $|$ $x$ $&ndash;$ $1$ $|$ $+$ $($ $y$ $+$ $2$ $)^{2}$ $&ge;$ $0$   $M&agrave;$ $|$ $x$ $&ndash;$ $1$ $|$ $+$ $($ $y$ $+$ $2$ $)^{2}$ $=$ $1$     $N&ecirc;n$ $ta$ $c&oacute;$ $2$ $trường$ $hợp$ $:$   $TH1$ $:$ $|$ $x$ $&ndash;$ $1$ $|$ $=$ $0$ $=>$ $x$ $=$ $1$     $($ $y$ $+$ $2$ $)x^{2}$ = $1$ $=>$ $y$ $+$ $2$ $=$ $1$ $=>$ $y$ $=$ $&ndash;$ $1$   $TH2$ : $|$ $x$ $&ndash;$ $1$ $|$ $=$ $1$ $=>$ $x$ $=$ $2$ $;$ $y$ $=$ $0$     $($ $y$ $+$ $2$ $)^{2}$ $=$ $0$ $+$ $2$ $=$ $y$ $=$ $&ndash;$ $2$                                                             $-$ $Vinny,$ $#Muoi$ $,$ $Ch&uacute;c$ $bạn$ $học$ $tốt$ $,$ $Sayorana~$