How do you subtract #(8z ^ { 4} + 7z ) - ( - 5z ^ { 4} - 9z + 8)#?

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Answer 1 · 2017-07-21T22:39:36

See a solution process below:

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

#8z^4 + 7z + 5z^4 + 9z - 8#

Next, group like terms:

#8z^4 + 5z^4 + 7z + 9z - 8#

Now, combine like terms:

#(8 + 5)z^4 + (7 + 9)z - 8#

#13z^4 + 16z - 8#