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OpenStudy (anonymous):
*** I will give you a medal (: *** Find all the zeroes of the equation. 2x^4+70x^2-72=0
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OpenStudy (anonymous):
@mathstudent55
OpenStudy (saifoo.khan):
Suppose x^2 = y. You can rewrite it as: 2y^2 + 70x - 72 = 0
OpenStudy (anonymous):
i dont understand...
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