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What is the expansion of (2w - 5)³ in standard form?

A) 8w³ - 60w² + 150w - 125
B) 8w³ - 30w² + 60w - 125
C) 8w³ - 30w² + 150w - 125
D) 8w³ - 60w² + 60w - 125

User Daelan
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1 Answer

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Final answer:

The expansion of (2w - 5)³ is 8w³ - 60w² + 150w - 125, which corresponds to option A.

Step-by-step explanation:

The expansion of (2w - 5)³ in standard form can be found by calculating each term in the binomial expansion, which follows the pattern of (a - b)³ = a³ - 3a²b + 3ab² - b³. Applying this pattern, we get:

  • The first term: (2w)³ = 8w³
  • The second term: 3(2w)²(-5) = -60w²
  • The third term: 3(2w)(-5)² = 150w
  • The fourth term: (-5)³ = -125

Putting it all together, we obtain the expanded form: 8w³ - 60w² + 150w - 125. Option A is the correct choice.

User Cgnorthcutt
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