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3 September, 18:43

What are the solutions of the systems? Use any method.

y=x^2-3x+3 y=2x-3

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  1. 3 September, 21:56
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    Y = x² - 3x + 3

    y = 2x - 3

    x² - 3x + 3 = 2x - 3

    - 2x - 2x

    x² - 5x + 3 = - 3

    + 3 + 3

    x² - 5x + 6 = 0

    x = - (-5) + / - √ ((-5) - 4 (1) (6))

    2 (1)

    x = 5 + / - √ (25 - 24)

    2

    x = 5 + / - √ (1)

    2

    x = 5 + / - 1

    2

    x = 5 + 1 x = 5 - 1

    2 2

    x = 6 x = 4

    2 2

    x = 3 x = 2

    y = x² - 3x + 3

    y = (3) ² - 3 (3) + 3

    y = 9 - 9 + 3

    y = 0 + 3

    y = 3

    (x, y) = (3, 3)

    or

    y = x² - 3x + 3

    y = (2) ² - 3 (2) + 3

    y = 4 - 6 + 3

    y = - 2 + 3

    y = - 1

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

    There can be two solutions.
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