railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Algebra Identities

Simplify the following expression.

(2a - b - 3c)(4a² + b² + 9c² + 2ab + 6ac - 3bc)

1

8a³ + b³ + 27c³

2

8a³ - b³ - 27c³ + 18abc

3

-8a³ + b³ + 27c³

4

8a³ - b³ - 27c³ - 18abc

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