KTaylor5 KTaylor5

11-02-2019
Mathematics

contestada

I need help 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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shaniamitchell51 shaniamitchell51

11-02-2019

Answer: The answer is -80

Step-by-step explanation:

2(2^2)+(3)(2)(−4)−4(−4)^2

2(2^2)+(3)(2)(−4)−4(−4)^2

=−80

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