1.

Factorise m4n-81n5. factorise the sum​

Answer»

n(m+3n)(m-3n)(m2+9n2)

Step-by-step explanation:

LET the GIVEN equation m4n-81n5 be written as

=m4n-81n5

=n(m4-81n4)

=n/(m2)2-(9n2)2/

=n(m2-9n2)(m2+9n2)

=n(m-3n)(m+3n)(m2+9n3)



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