已知a²+2ab=-10,b²+2ab=16,则a²-b²=
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已知a²+2ab=-10,b²+2ab=16,则a²-b²=
已知a²+2ab=-10,b²+2ab=16,则a²-b²=
已知a²+2ab=-10,b²+2ab=16,则a²-b²=