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Rewrite x4y2 − 3x3y3 using a common factor. 3xy(x3y − x2y) 3xy2(x2 − x2y) x2y(xy − 3xy2) x2y2(x2 − 3xy)

User Kostia
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1 Answer

4 votes

Answer:

(d) x²y²(x² − 3xy)

Explanation:

You want to identify a rewrite of x⁴y² − 3x³y³ using a common factor among ...

  • 3xy(x³y − x²y)
  • 3xy²(x² − x²y)
  • x²y(xy − 3xy²)
  • x²y²(x² − 3xy)

Simplified

Here, we write the expanded form of the answer choices to see if any is a fit for the given expression.

  • 3xy(x³y − x²y) = 3x⁴y² -3x³y²
  • 3xy²(x² − x²y) = 3x³y² -3x³y³
  • x²y(xy − 3xy²) = x³y² -3x³y³
  • x²y²(x² − 3xy) = x⁴y² -3x³y³ . . . . . . . matches the given expression

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Additional comment

The relevant rule of exponents is ...

(a^b)(a^c) = a^(b+c)

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