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Mathematics 14 Online
OpenStudy (anonymous):

a^2 + b^2 = 4 and (a-b)^2=2, what is the value of ab?

OpenStudy (anonymous):

is ab -1?

OpenStudy (midhun.madhu1987):

|dw:1409694733638:dw| do u know the expansion of (a-b)^2?

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