Question

factorize 3x^7y - 81x4y4​

Answer 1

Answer:

  3x  

7

y−81x  

4

y  

4

 

=3x  

4

y(x  

3

−27y  

3

)

=3x  

4

y(x  

3

−(3y)  

3

)

Using a  

3

−b  

3

=(a−b)(a  

2

+ab+b  

2

),we get

  3x  

4

y(x−3y)(x  

2

+x(3y)+(3y)  

2

)

=3x  

4

y(x−3y)(x  

2

+3xy+9y  

2

)

Step-by-step explanation: