Question

Помогите решить: √х+3-1=х

Answer 1

$\sqrt{x} + 3 - 1 = x \\ \sqrt{x} + 2 = x \\ \sqrt{x} = x - 2 \\ x = {x}^{2} - 4x + 4 \\ x - {x}^{2} + 4x - 4 = 0 \\ x \times (1 - x) - 4( - x + 1) = 0 \\ (1 - x) \times (x - 4) = 0 \\ x = 4$