takashaking16 takashaking16

12-04-2018
Mathematics

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factor the difference of 81x^4 - 625

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Аноним Аноним

12-04-2018

[tex]81x^4 - 625[/tex]

[tex] = (9x^2)^2 - (25)^2 [/tex]

[tex] = (9x^2 + 25)(9x^2 - 25) [/tex]

[tex] = (9x^2 + 25)( (3x)^2 - (5)^2)[/tex]

[tex] = (9x^2 + 25)( 3x - 5)(3x + 5)[/tex]

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