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OpenStudy (anonymous):
Evaluate the polynomial x=9 and y=-5 x^2-3y^2+2 x y=
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OpenStudy (anonymous):
put x=9 and y=-5 into x^2-3y^2+2 x y x^2-3y^2+2 x y=(9^2)-3(-5)^2+2(9)(-5) = -84
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