Simplify.

2m2 - 4n2 + 3m - 6m2 - 2m + 7n2

A.

-4m2 + 3n2 + m

B.

-4m2 + 3n2

C.

-36m + 28n

D.

9m2 + 6m + 11n2

So I am assuming that 2m2 means 2m^2 so

we can only combine m's with m's and n's with n's

group them together (m's with m's and n's with n's)

using the propoerty that says

a+b=b+a so we can move them around so

2m^2+3m-6m^2-2m-4n^2+7n^2

we can combine m^2 and m^2's but not m^2 and m so

regroup with like powers

2m^2-6m^2+3m-2m-4n^2+7n^2

add

-4m^2+m+3n^2

order in hightest power first

-4m^2+3n^2+m

the answer is A