Respuesta :

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Step-by-step explanation:

Given

4 - (x -1 ) ²

= 2² - ( x - 1) ² [ putting it into the formula a² - b² = (a+b) (a - b) ]

= ( 2 + x - 1) ( 2 - x + 1)

= ( x + 1 ) ( 3 - x)

Hope it will help :)❤