Объяснение:
пускай
[tex] \sqrt{2x - 1} = y[/tex]
тогда:
[tex]y+ {y}^{2} = 2 \\ {y}^{2} + y- 2 = 0 \\ y1 = - 2 \\ y2 = 1 \\ \\ \sqrt{2x - 1} = 1 \\ 2x - 1 = 1 \\ 2x = 2 \\ x = 1[/tex]
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Объяснение:
пускай
[tex] \sqrt{2x - 1} = y[/tex]
тогда:
[tex]y+ {y}^{2} = 2 \\ {y}^{2} + y- 2 = 0 \\ y1 = - 2 \\ y2 = 1 \\ \\ \sqrt{2x - 1} = 1 \\ 2x - 1 = 1 \\ 2x = 2 \\ x = 1[/tex]