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Umy question is 7m^4n-7mn^4​

Answer»

Given: The term 7m^4n - 7mn^4

To FIND: FACTORISE the given term.

Solution:

  • Now the given term is 7(m^4)n - 7m(n^4)
  • Taking COMMON terms out, we get:

                 7mn(m³ - n³)

  • Now we know the formula:

                 a³ - b³ = (a - B)(a² + AB + b²)

  • Applying this, we get:

                 7mn(m - n)(m² + mn + n²)

Answer:

            So the factors are 7mn(m - n)(m² + mn + n²)


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