dannyjay33 dannyjay33

14-06-2021
Mathematics

contestada

What is the value of the expression 2x^2 + 3xy - 4y^2 when x = 2 and y = -4?

Respuesta :

anikaparthiban15 anikaparthiban15

08-07-2021

Answer:

-80

Step-by-step explanation:

2x^2 + 3xy - 4y^2

x = 2 | y = - 4

2(2)^2 + 3(2)(-4) - 4(-4)^2

2 * 4 + 3(2)(-4) - 4 * 16

8 - 24 - 64

-80

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