How do you find the sum or difference of #(6x^3-4)+(-2x^3+9)#?

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Answer 1 · 2018-05-28T20:59:18

See a solution process below:

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

#6x^3 - 4 - 2x^3 + 9#

Next, group like terms:

#6x^3 - 2x^3 - 4 + 9#

Now, combine like terms:

#(6 - 2)x^3 + (-4 + 9)#

#4x^3 + 5#