takashaking16
takashaking16
12-04-2018
Mathematics
contestada
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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