Solving Radical Equations 2 with Help
View the Lesson | MATHguide homepage Updated June 22nd, 2023

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Problem: Solve for the variable. Check a value if it is extraneous.
 
√ q - 4  = q - 6
 
q - 4 = ( q + )2
 
q - 4 = q2 + q +
 
0 = q2 + q +
 
0 = ( q + )( q + )
 
q1 =     q2 =
extraneous   extraneous