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Mathematics 36 Online
OpenStudy (anonymous):

Is x^2 + 81 factorable?

OpenStudy (anonymous):

I agree! :)

OpenStudy (anonymous):

No, it is not.

OpenStudy (anonymous):

If it was x^2-81, then it would be.

OpenStudy (amistre64):

depends on the domain to be used

OpenStudy (amistre64):

x^2 + 81 = 0 x^2 = -81 x = +- sqrt(-81) x = 9i , x = -9i

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