Question

is the solution to the following problem {2,8}
solve for x: sqrt(2x) + 4 = x +0

Answer 1

no

Answer 2

8 yes

Answer 3

oh ok thanks

Answer 4

When you square equations to solve for x, make sure to test the answer you get. Squaring equations produces what are called extraneous solutions, which will not be solutions to the original problem. This is why 2 fails.

Answer 5

forgot about that, got a crappy B- on my test so im trying to see if anything was marked wrong accidently, hehe.