Question

2/15x - 4/21x^2

Answer 1

\[\frac{2}{15x}-\frac{4}{21x^2}\]\[=\frac{42x^2 - 60x}{x^3(315)}\]

Answer 2

I think you can factor out 6 and simplify it further

Answer 3

-2/315x^2?

Answer 4

\[=\frac{2(7x - 10)}{x^2(315)}\]

Answer 5

2(7x-10)/105x^2 ??

Answer 6

I don't have a 105 in there :(

Answer 7

hm, cause that's not one of the answers again, they are....

-2/15x+21x^2

-2/315x^2

2(7x-10)/105x^2

-8/105x^2

Answer 8

actually I think 2(7x-10)/105x^2 is the right answer. I did a mistake again because I forgot that I canceled a 3.\[=\frac{2(7x - 10)}{x^2(105)}\]

Answer 9

gotcha