Question

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

Answer 1

n²-7n-21

Step-by-step 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}`