Question

factorise 343 m ^3 +27 n ^3
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Answer 1

Step-by-step explanation:

$343 {m}^{3} + 27 {n}^{3} \\ =( 7m)^{3} + {(3n)}^{3} \\ = (7m + 3n)( {7m}^{2} - 7m \times 3n + {3n}^{2} )$

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Answer 2

Step-by-step explanation:

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