Question

1331m3-729n3 factorisation

Answer 1

1331m³ - 729n³

(11m)³ - (9n)³

Formula used:

[ (a³-b³) = (a-b)(a²+ab+b²)]

(11m-9n)((11m)²+11m×9n+(9n)²)

(11m-9n) (121m²+99m+81n²)

Answer 2

Hi

friend !

here is your answer

given

1331m³ - 729n³

( 11m )³ - ( 9n )³

first, we need a formula which is --

a³ - b³ = ( a - b ) ( a² + ab + b² )

now ,

( 11m - 9n ) { ( 11m )² + 11m.9n + ( 9n )² }

= ( 11m - 9n ) ( 121m² + 99mn + 81n² )

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