I have two solutions to the problem 9x^2 + 2sqrt3y - 3x^2sqrt3y they are
6x^2 + sqrt3y and 6x^2sqrt3y.
Please let me know which is right and how we got there.
I know how the got their answer. BUT it is wrong.
If you look at that expression we see that but can be any real number.
Now why is it incorrect? Let the given expression evaluates to .
BUT . To be equal the values must be the same.
Here is the mistake. They said . BUT IT DOES NOT.
This is what is correct: .