SOLUTION: simplify: 3m^4-7m^3+8m^2-4m - [-3m^4-(7m^3-8m^2+4m)]

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Question 152630: simplify:
3m^4-7m^3+8m^2-4m - [-3m^4-(7m^3-8m^2+4m)]
Answer by orca(409) About Me  (Show Source):
You can put this solution on YOUR website!
Firstly, remove the parentheses.
Secondly remove the brackets.
finally combine like terms.
3m^4-7m^3+8m^2-4m - [-3m^4-(7m^3-8m^2+4m)]
= 3m^4-7m^3+8m^2-4m - [-3m^4-7m^3+8m^2-4m]
= 3m^4-7m^3+8m^2-4m +3m^4+7m^3-8m^2+4m
= 3m^4 + 3m^4 - 7m^3 + 7m^3 + 8m^2 - 8m^2-4m +4m
= 6m^4