(2x - 1)/(x ^ 2 + 2x + 4) * (x ^ 4 - 8x)/(2x ^ 2 + 5x - 3) * (x + 3)/(x ^ 2 - 2x)
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We have : ( 2x − 1 )( x2 + 2x + 4) × (x4 − 8x)( 2x2 − 5x − 3 ) × ( x + 3 )( x2 − 2x )
So, we take term 2x2 - 5x - 3 , And using splitting the middle term method and get
2x2 - 6x + x - 3
2x ( x - 3 ) + 1 ( x - 3 )
( 2x + 1 ) ( x - 3 )
So, 2x2 - 5x - 3 = ( 2x + 1 ) ( x - 3 ) Substitute that and get
⇒ ( 2x − 1 )( x2 + 2x + 4) × (x4 − 8x)( 2x − 1 )( x + 3 ) × ( x + 3 )( x2 − 2x )⇒ ( 2x − 1 ) (x4 − 8x) ( x + 3 ) ( x2 + 2x + 4) ( 2x − 1 ) ( x + 3 ) ( x2 − 2x ) ⇒ (x4 − 8x) ( x2 + 2x + 4) ( x2 − 2x ) ⇒ (x4 − 8x) ( x4 − 2x3+ 2x3 − 4x2+ 4x2 −8x) ⇒ (x4 − 8x) ( x4 −8x)
⇒ 1 ( Ans
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