LONCAPA Help
If the answer to your LONCAPA problem is
You can enter any of the following:

2x^2+6x+4/3

2*x^2+6*x+4/3

2(x^2+3x+2/3)
 or any other expression that is equivalent to the answer
However, if the answer to your LONCAPA problem has more than one
variable, such as the following:
2xy+3x
You will need to enter the * for all implied multiplication, for
example:
The computer can figure out that 2x is 2*x because it is a number
times a letter, but it can't tell if xy is a two letter variable or
if it is x*y. Also, it is unclear if exp is meant to be
the exponential function or e*x*p.
If your answer is:
enter the following as your answer:

sqrt(4x)

2sqrt(x)

2*sqrt(x)
Note that LONCAPA expects expressions, not equations. So
y=x^2
would not be recognized.