Question

Factorisation of (2a-b²)2(2a-b)-8

Answer 1

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Answer 2

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Let the value of (2a - b) be x.

So

x² + 2 x - 8

= x² + 4 x - 2 x - 8

= x ( x+4) - 2 ( x + 4)

= ( x - 2) ( x +4 )

So,

= ( 2a - b - 2 ) ( 2a - b + 4).