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KALEB

4 years, 11 months ago

1+9r^2+81r^4=256 and 1+3r+9r^2=32

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Prahlad Singh

4 years, 10 months ago

a^4+b^4+a^2b^2 = (a^2+b^2+ab) (a^2+b^2-ab) then 256/32 = 8

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