Alakbar26 Alakbar26

15-09-2021
Mathematics

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Identify the factors of x2 − 4x − 21. (x − 7)(x + 3) (x + 7)(x − 3) (x + 21)(x − 1) (x − 21)(x + 1)

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Аноним Аноним

15-09-2021

x^2-4x-21

= x^2-7x+3x-21

= x(x-7)+3(x-7)

= (x-7)(x+3)

The factor of x^2-4x-21 is (x-7)(x+3).

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