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2 years ago

Factor 125x3 + 343y3

Mathematics

1 answer:

Annette [7]2 years ago

5 0

Answer:

(5x + 7y)(25x² - 35xy + 49y²)

Step-by-step explanation:

125x³ + 343y³ ← is a sum of cubes and factors in general as

a³ + b³ = (a + b)(a² - ab + b² )

125x³ = (5x)³ ⇒ a = 5x

343y³ = (7y)³ ⇒ b = 7y

125x³ + 343y³

= (5x + 7y)((5x)² - (5x × 7y) + (7y)²)

= (5x + 7y)(25x² - 35xy + 49y²) ← in factored form

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2 years ago

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2 years ago

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The answer to your question is 10 seconds. I know this because:

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So, it took Boris a total of 10 seconds to run up the out of service elevator.

Hope this helps!

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3 years ago

Read 2 more answers