Question

find the
cube
of
5a + 3b​

Answer 1

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Answer 2

Formula:

(a+b)³ = a³ + b³ + 3a²b + 3 ab²

= (5a + 3b)³

= (5a)³ + (3b)³ + 3(5a)²(3b) + 3(5a)(3b)²

= 125a³ + 27b³ + 225a²b + 135 ab²