Question

Consider a student's steps to solve the radical equation
x + 2sq - x = 0, as shown here:

x+2-x=0
x+2=x
x+2=x2
x^2-x-2=0
(x-2)(x+1)=0
x=2,-1
Show that one of the values does not satisfy the original radical equation.

Use the logic of equation-solving to explain what went wrong in the process. Explain how the extra solution arose

Please help me i dont get this and i need to pass math

Answer 1

i can;'t understand the first line