Question

Помогите решить: √х+3-1=х

Answer 1

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