Question

subtract.
$(-7n^{3}-6n - 4)-(5n^{3}-2n^{2}-1)$

Explanation:

Step1: Distribute the negative sign

$(-7n^3 - 6n - 4) - 5n^3 + 2n^2 + 1$

Step2: Combine like $n^3$ terms

$-7n^3 - 5n^3 = -12n^3$

Step3: Keep the $n^2$ term

$+2n^2$

Step4: Keep the $n$ term

$-6n$

Step5: Combine constant terms

$-4 + 1 = -3$

Step6: Combine all simplified terms

$-12n^3 + 2n^2 - 6n - 3$

Answer:

$-12n^3 + 2n^2 - 6n - 3$