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:

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

$4x^3 + 5$

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