SOLUTION: I need help solving and check for extraneous solutions:
√y+9=1
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Question 111663: I need help solving and check for extraneous solutions:
√y+9=1
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve and check for extraneous roots.
Square both sides. This might introduce extraneous roots.
or Subtract 9 from both sides in both of these.
or
Check solutions:
Substitute y = -8.
Ok
Substitute y = -10
Not valid! This is an extraneous root.
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