Question

factorise the following 2 x ki power 4 minus 128 x

Answer 1

Q . Factorize 2x⁴ - 128x.

= 2x⁴ - 128x

By takinh 2x common,

= 2x ( x³ - 64 )

= 2x { (x)³ - (4)³ }

Using identity [ a³ - b³ = ( a - b ) ( a² + b² + ab ) ].

= 2x ( x - 4 ) { (x)² + (4)² + 4x }

= 2x ( x - 4 ) ( x² + 16 + 4x ).

Answer 2

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