How do you subtract #(9m ^ { 3} + 7m ) - ( - 2m ^ { 3} - 4m + 9)#?

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Answer 1 · 2017-05-04T21:59:26

See a solution process below:

First, remove all of the terms from parenthesis. Be careful to handle the signs of each individual term correctly:

#9m^3 + 7m + 2m^3 + 4m - 9#

Next, group like terms:

#9m^3 + 2m^3 + 7m + 4m - 9#

Now, combine like terms:

#(9 + 2)m^3 + (7 + 4)m - 9#

#11m^3 + 11m - 9#