Solve Equation

Question

Solve Equation

 

√¯y - 11  + √¯y =11

 

the solutions are y = ?

Answer 1

√¯y - 11 + √¯y =11 is the same as

2√¯y - 11 =11 which is the same as

2√¯y =22

√¯y =11

y = 121

Answer 2

√( Y -11) + √Y = 11

 

 √(Y -11) = 11 - √Y

 

  [√( Y -11) ] ^2 = ( 11 - √Y) ^2

 

     Y - 11 = 121 -22√Y + Y

 

      -11 = 121 - 22√y

 

         -1 = 11- 2 √Y

 

           -12 = -2 √Y

 

            6 = √Y

 

            36 = Y