x² + x!! - 8x
----------
= 2² + 2!! - 8(2)
= ( 2 × 2 ) + ( 2 × 1 ) - 8(2)
= 4 + ( 2 × 1 ) - 8(2)
= 4 + 2 - ( 8 × 2 )
= 4 + 2 - 16
= 6 - 16
= -10
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x² + x!! - 8x
----------
= 2² + 2!! - 8(2)
= ( 2 × 2 ) + ( 2 × 1 ) - 8(2)
= 4 + ( 2 × 1 ) - 8(2)
= 4 + 2 - ( 8 × 2 )
= 4 + 2 - 16
= 6 - 16
= -10