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Using algebra identity , find the coeffi...

Using algebra identity , find the coefficients of ` x^(2) ,x` and constant term without actual expansion.
(i) ` (x+5)(x+6)(x+7) `
(ii) ` (2x+ 3 )( 2x-5) (2x-6) `

Text Solution

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The correct Answer is:
constant term `= (3) (-5) (-6) =90`
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