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30 December, 11:32

Y=x^2-2x-1 and y=-3x+5 solved algebraically

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  1. 30 December, 12:29
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    Step-by-step explanation:

    y=x²-2x-1

    and y=-3x+5

    x²-2x-1=-3x+5

    x²+x-6=0

    x²+3x-2x-6=0

    x (x+3) - 2 (x+3) = 0

    (x+3) (x-2) = 0

    x=-3,2

    when x=-3

    y=-3*-3+5=9+5=14

    when x=2

    y=-3*2+5=-6+5=-1

    so solutions are (-3,14) and (2,-1)
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