How do you simplify #(- 7x ^ { 3} + 5a x - 3) + ( 7x ^ { 3} + 5 - 9a x )#?

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Answer 1 · 2017-06-29T13:24:07

See a solution process below:

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

#-7x^3 + 5ax - 3 + 7x^3 + 5 - 9ax#

Next, group like terms:

#-7x^3 + 7x^3 + 5ax - 9ax - 3 + 5#

Now, combine like terms:

#(-7 + 7)x^3 + (5 - 9)ax + (-3 + 5)#

#0x^3 + (-4)ax + 2#

#-4ax + 2#