Mathematics · Algebraic Identities
The expression ( 1 2 + 1 3 + 1 4 )( 1 2 × 1 3 + 1 3 × 1 4 + 1 4 × 1 2 ) - 1 2 × 1 3 × 1 4 is equal to which of the following?
- 1( 1 3 + 1 4 )( 1 4 + 1 2 )( 1 2 - 1 3 )
- 2( 1 3 - 1 4 )( 1 4 + 1 2 )( 1 2 + 1 3 )
- 3( 1 3 + 1 4 )( 1 4 + 1 2 )( 1 2 + 1 3 )✓
- 4( 1 3 - 1 4 )( 1 4 + 1 2 )( 1 2 - 1 3 )
Correct answer
( 1 3 + 1 4 )( 1 4 + 1 2 )( 1 2 + 1 3 )
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