Question

Simplify -3p3 + 5p + (-2p2) + (-4) - 12p + 5 - (-8p3). Select the answer in descending powers of p.

1 - 7p - 2p2 + 5p3
5p3 - 2p2 - 7p + 1
1 + 7p + 2p2 - 5p3
-5p3 + 2p2 + 7p + 1

Answer 1

B. 5p³ - 2p² - 7p + 1

Explanation:

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Answer 2

The answer is 5p³ - 2p² - 7p + 1

-3p³ + 5p + (-2p²) + (-4) - 12p + 5 - (-8p³)
= -3p³ + 5p - 2p² - 4 - 12p + 5 + 8p³
= 8p³ - 3p³ - 2p² + 5p - 12p - 4 + 5
= 5p³ - 2p² - 7p + 1