Question

Factorise : a³ –27b³ + 3a²b –9ab²
Please help me asap!

Answer 1

Answer:

(a-3)³

Step-by-step explanation:

the answer is (a-3)³ as the equation comes down to that property

Answer 2

Answer:

${a}^{3} - {27b}^{3} - 3 {a}^{2} b + 9 {ab}^{2} = {a}^{3} - 3 {a}^{2} b + 9a {b}^{2} - {27b}^{2}$

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

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