Jawaban:
[tex]x = \frac{ \sqrt{2y + 2} }{2} + 1 \\ x = - \frac{ \sqrt{2y + 2} }{2} + 1.y \geqslant \\ - 1[/tex]
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Jawaban:
[tex]x = \frac{ \sqrt{2y + 2} }{2} + 1 \\ x = - \frac{ \sqrt{2y + 2} }{2} + 1.y \geqslant \\ - 1[/tex]