Question

Resolva a equacao irracional √x-1=3-x

Answer 1

$\sqrt{x-1}=3-x\\ \\ ( \sqrt{x-1})^2=(3-x)^2\\ \\ x-1=9-6x+x^2\\ \\ x^2-7x+10=0\\ \\ S=\{2\}$