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OpenStudy (anonymous):
solve x^4+8x^2+15=0
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OpenStudy (isaiah.feynman):
Rewrite it in quadratic form.
OpenStudy (anonymous):
x^4+8x^2+15
OpenStudy (isaiah.feynman):
Do a substitution, let x^2 = t
OpenStudy (anonymous):
i'm confused.
OpenStudy (isaiah.feynman):
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OpenStudy (triciaal):
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