Question

Factorise the following:
27a³+ 343 ​

Answer 1

Answer:

(3a)³ + (7)³

Step-by-step explanation:

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Answer 2

Answer:

$(3a + 7)(9 {a}^{2} - 21a + 49)$

Step-by-step explanation:

${(3a)}^{3} + {(7)}^{3} \\ \\ (3a + 7){ \: {(3a)}^{2} - (3 \times 7) + 49 \: } \\ \\ (3a + 7)( {9}^{2} - 21a + 49)$