Question

Factorise: 54a^3 + 16b^3
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Answer 1

Factorise: 54a^3 + 16b^3..........

Answer 2

Answer:

we know that

${a}^{3} + {b}^{3} = {(a + b)}^{3} - 3ab(a + b)$

54a^3 + 16a^3 = (54a+16b)^3 - 3(54a)(16b)(54a+16b)

= (54a+16b)^3 - 2592ab(54a+16b)