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12 September, 05:39

For what values of x will (x, y) be a solution of the system of equations below: y = x2 + 3x - 3 2x - 1 = y

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  1. 12 September, 06:01
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    hello:

    y = x2 + 3x - 3 ... (1)

    2x - 1 = y ... (2)

    subsct in (1):

    2x-1 = x² + 3x - 3

    x² + x - 2 = 0

    (x+2) (x-1) = 0

    x+2=0 or x-1 = 0

    x=-2 or x=1

    if : x = - 2 y = 2 (-2) - 1 = - 2

    if : x = 1 y = 2 (1) - 1 = 1

    values of x will (x, y) be a solution of the system : (-2,-2), (1,1)
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