Math, asked by satishthushara, 7 months ago

simplify (a-3b) ^3+(a+3b) ^3

Answers

Answered by Anonymous

9

Answer:

2a(a²+27b²)

Step-by-step explanation:

(a-3b)³+(a+3b)³

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

=2a[(a²+9b²-6b+a²+9b²+6b-a²+9b²]

=2a(a²+27b²)

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