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maxonik [38]
1 year ago
10

Perform the indicated operations(7n^2 - 6) - (6n^2 + 9) - (7n + 6)

Mathematics
1 answer:
DerKrebs [107]1 year ago
5 0

Answer:

n²-7n-21

Explanation:

Given the expression:

\mleft(7n^2-6\mright)-(6n^2+9)-(7n+6)

First, open the brackets:

=7n^2-6-6n^2-9-7n-6

Next, bring the like terms together and simplify:

\begin{gathered} =7n^2-6n^2-7n-6-9-6 \\ =n^2-7n-21 \end{gathered}

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