Question

resolva a equação irracional 

raiz de 2 * raiz de x-4=2

Answer 1

√2.√(x-4)=2
√(x-4)=2/√2
[√(x-4)]²=[2/√2]²
x-4=4/2
x-4=2
x=2+4
##x=6

Answer 2

$\sqrt{2}\times\sqrt{x-4}=2$

$(\sqrt{2}\times\sqrt{x-4})^2=2^2$

$2(x-4)=4$

$x-4=2$

$x=6$