Question

Answer 1

3\(\sqrt{x-2}\)+ 2\(\dfrac{\sqrt{x-2}}{2}\)-\(\dfrac{1}{2}\)2\(\sqrt{x-2}\)=12

3\(\sqrt{x-2}\)+\(\sqrt{x-2}\)-\(\sqrt{x-2}\)=12

(3+1-1)\(\sqrt{x-2}\)=12

3\(\sqrt{x-2}\)=12

\(\sqrt{x-2}\)=4

x - 2 = 4  hoặc x - 2 = -4

vậy x = 6 , x= - 2

Answer 2

3+ 212122=12

3+-=12

(3+1-1)=12

3=12

=4

x - 2 = 4  hoặc x - 2 = -4

vậy x = 6 , x= - 2