Question

Solve x=2√(x-4) + 4.

Answer 1

Answer:x=4,8

Explanation:

Given

`x=2√(x-4)+4`

`x-4=2√(x-4)`

Squaring both sides

`(x-4)^2=4(x-4)`

`x^2+16-8x=4x-16`

`x^2-12x+32=0`

`x=(12\pm √(12^2-4* 32))/(2)`

`x=(12\pm 4)/(2)`

`x=4,8`