Question

27x³-63x²+49x-343/27
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Answer 1

Step-by-step explanation:

(3x)³ - 7(3x)² + 7²x - (7/3)³

(3x)³ - (7/3)³ - 7/3*3*(3x)² + 3*(7/3)²*3x

Using identity : a³-b³-3a²b+3ab² = (a-b)³

=> Here, a= 3x and b= 7/3

=> (3x-7/3)³

Answer => (3x-7/3) (3x-7/3) (3x-7/3)