Question

Someone please give me a radical equation with a solution that's extraneous.
I'll fan and medal c:

Answer 1

I've tried making my own, but they all come out to be non-extraneous ._.

Answer 2

the square root of 121 is 11, - 2 is 9 ._.

Answer 3

thanks for helping but there's always a solution :/

Answer 4

@gorv @amistre64 @ganeshie8 could you guys help me out? c:

Answer 5

http://www.purplemath.com/modules/solverad2.htm
http://www.regentsprep.org/regents/math/algtrig/ate10/radlesson.htm