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OpenStudy (anonymous):
how to change 490x2 + 90y2 - 4410=0 into standard form?
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OpenStudy (nikita2):
490x2 + 90y2 - 4410=0 490x2 + 90y2 = 4410 490/4410x2 + 90/4410y2 = 1 49/441x2 + 9/441y2 = 1
OpenStudy (nikita2):
x^2/9 + y^2/49 = 1
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