Question

Factorise: 12-(x+x^2 )(8-x-x^2)​

Answer 1

Put u = x² + x.

Then

 12 - ( x + x² ) ( 8 - x - x² )

= 12 - u ( 8 - u )

= u² - 8u + 12

= ( u - 2 ) ( u - 6 )

= ( x² + x - 2 ) ( x² + x - 6 )

= ( x - 1 ) ( x + 2 ) ( x - 2 ) ( x + 3 )

Answer 2

Answer:

Answer is in above

Step-by-step explanation:

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