Question

√ x² – 4x + √ x – 4 = 0

quem responder dou 50 pontos na próxima pergunta​

Answer 1

$\sf \sqrt{x^2-4x}+\sqrt{x-4}=0\\\\\\x^2-4x=x-4\\\\\\x=4,\:x=1\\\\\\\to \boxed{\sf x=4}$