Mathematics, 07.10.2019 16:30, brialevy2283

Ineed with this(explain). what is the value of the expression 2x^2 + 3xy - 4y^2 when x=2 and y= -4

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Ineed with this(explain). what is the value of the expression 2x^2 + 3xy - 4y^2 when x=2 and y= -4...

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