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19 January, 02:31

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

X^2 - y^2+xy

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  1. 19 January, 05:09
    0
    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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