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Mathematics, 19.08.2019 08:30 kimlyn58p0wyn0
If x² – y² = 8 and x²+ y² = 4, then what is the value of x⁴ – y⁴?
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If x² – y² = 8 and x²+ y² = 4, then what is the value of x⁴ – y⁴?...
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