计算:3(x-2)^2-(x-3)(x+2)

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

计算:3(x-2)^2-(x-3)(x+2)
=3(x²-4x+4)-(x²-x-6)
=3x²-12x+12-x²+x+6
=2x²-11x+18

3(x-2)^2-(x-3)(x+2)
=3(x²-4x+4)-(x²+2x-3x-6)
=3x²-12x+12-x²+x+6
=2x²-11x+18