Question

factorise 16x⁴ - 1
Class 8​

Answer 1

Answer:

factorisation should be done by equating the given expression to zero

Answer 2

Answer:

$16 {x}^{4} - 1 = { ({(2x)}^{2} )}^{2} - {1}^{2} \\ = ( {(2x)}^{2} - 1)( {(2x)}^{2} + 1) \\ = (2x - 1)(2x + 1)( {(2x)}^{2} + 1)$