maths

The method for completing the square can be used to write the expression -2x^2+12x-5 in the form a(x+b)^2 +c, where a,b, and c are constants. What is the value of c? Thank you for any help.

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asked by Trevor
  1. -2x^2+12x-5
    -2(x^2-6x +9) -5 -2*9
    -2(x-3)^2 -23

    check that.

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