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16-05-2020
Mathematics

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22. One factor of x² + 2x - 8 is

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hoanganh384628 hoanganh384628

16-05-2020

Answer:

(x-2)(x+4)

Step-by-step explanation:

x² + 2x - 8 = x² + 2x +1 - 9 = x² + x +x+1 - 9 = x(x+1) +(x+1) - 9

= [tex](x+1)^{2}[/tex] - [tex]3^{2}[/tex]

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

= (x-2)(x+4)

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