What should I do, GED or High school diploma?

Ok, Im going into the 11th this year but I have to make up a math credit so I will have to do 3 maths in 2 years.. And the math is really not my thing, Its so complicated, I failed 9th grade math but made it up pretty easily, but im still behind by 1 credit. Would it be easier to get a tutor and try the math in high school or go for my GED?