Solving Radical Equations 2 with Help
View the Lesson | MATHguide homepage Updated November 11th, 2017


Status: Waiting for your answers.





Problem: Solve for the variable. Check a value if it is extraneous.
 
r + 20  = r + 8
 
r + 20 = ( r + )2
 
r + 20 = r2 + r +
 
0 = r2 + r +
 
0 = ( r + )( r + )
 
r1 =     r2 =
extraneous   extraneous