Question

Simplify the following expression in your notebook. Select the correct answer.

Answer 1

-24n2+31 if im correct!

Answer 2

Answer:

$-24n^2 + 31$

Step-by-step explanation:

$7 - 3[(n^3 + 8n) divide (-n) + 9n^2]$

To simplify it we use order of operation PEMDAS

Parenthesis , exponents , multiply, divide, add and subtract

$7 - 3[(n^3+ 8n) divide (-n) + 9n^2]$

LEts start with parenthesis (divide by -n)

$7 - 3[-n^2-8+ 9n^2]$

Now we simplify the parenthesis by combining like terms

$7 - 3[-8+8n^2]$

multiply by -3

$7+24 -24n^2$

$-24n^2 + 31$