Question

2 : Write the following cubes in the expanded form:
(i) (3a + 4b)
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Answer 1

Answer:

(a + b )³ = a³ + b³ + 3a²b + 3ab²

Step-by-step explanation:

if a = 3a , b= 4b

(3a)³ + (4b)³ + 3 (3a)² (4b) + 3 (3a) (4b)²

27a³ + 64b³ + 12b (9a²) + 9a (16b²)

27a³ + 64b³ + 1O8a²b + 144ab²

hope this helps u