Math, asked by sattpal, 11 months ago

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

Answers

Answered by ajay8949

43

(a-3b)³ + (a+3b)³

a³-3b³-3×a×3b(a-3b) + a³+3b³+3×a×3b(a-3b)

a³-27b³-9ab(a-3b)+a³+27b³+9ab(a+3b)

2a³-9a²b+27ab²+9a²b+27ab²

2a³+54ab²

Answered by saksham24133

11

Answer:

Step-by-step explanation:

(a-3b)³ + (a+3b)³

a³-3b³-3×a×3b(a-3b) + a³+3b³+3×a×3b(a-3b)

a³-27b³-9ab(a-3b)+a³+27b³+9ab(a+3b)

2a³-9a²b+27ab²+9a²b+27ab²

2a³+54ab²

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