Hi

-2(x+3)^2 +3(x-3)^2

-2[(x+3)(x+3)] +3[(x-3)(x-3)]

-2[x^2+ 6x + 9] +3[x^2 - 6x + 9]

-2x^2 -12x -18 + 3x^2 - 18x + 27

  x^2 -30x + 9 

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