jerry40 jerry40

05-03-2017
Mathematics

contestada

Evaluate the polynomial when x = 7 and y = -2

X^2 - y^2+xy

Respuesta :

ghanami ghanami

05-03-2017

Hello

Evaluate the polynomial x²-y²+xy when x=7 and y=-2
(7)² - (-2)² +(7)(-2) = 49-4-14 =49-18 = 31
Important note : (-2)²=(-2)(-2) =4

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