Question

Simplify each sum(7n^4-5n^2-8n^3)+(8n^2+6n^3+8n-4n^4)

Answer 1

\[(7n^4-5n^2-8n^3)+(8n^2+6n^3+8n-4n^4)\] group like terms\[7n^4-4n^4 -8n^3+6n^3+8n^2-5n^2+8n\] now simplify\[3n^4-2n^3+3n^3+8n\]

Answer 2

You have just one sum to calculate here, right?

(7n^4-5n^2-8n^3)+(8n^2+6n^3+8n-4n^4)

One of the easier ways of calculating this sum would be to stack similar powers of n vertically:

7n^4- 5n^2-8n^3 => 7n^4 - 8n^3 - 5n^2
-8n^2+6n^3+8n-4n^4 => -4n^4 +6n^3 -8n^2 + 8n
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combine like terms!