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math

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Write in the form y=a(x-p)^2+q
please show the steps..
a)y=-2x^2+6x+11
b)y=-x^2-3x-3
c)y=1.5x^2-9x+10

  • math -

    factor out any coefficent of x
    y= -2(x^-3x) + 11

    Now, complete the square in the ( )
    y=-2(x^2-3x+9/4) + 11 - 9/4
    y=-2(x-3/2)^2- 8 3/4

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