Question

Can someone help me solve 2√x−4=10 I'm confused.

Answer 1

let's analyze two cases

case A) 2(√x)−4=10
2√x=10+4----> 2√x=14----> √x=14/2----> square---> x=7²----> x=49

case B)
2√(x-4)=10
√(x-4)=10/2-----> square---> x-4=5²----> x=25+4-----> x=29