Question

Calcule: √x =x a) 0 e 1. c) 1,-1 c) 2, 0. d) -1 e 0

Answer 1

$\sqrt{x} = x\\(\sqrt{x} )^2 = x^2\\x = x^2\\x^2 - x = 0\\x(x - 1) = 0\\x = 0 ; 1 (A)$