(x+2)(x-2)+x(3-x)化简

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(x+2)(x-2)+x(3-x)化简
(x+2)(x-2)+x(3-x)化简

(x+2)(x-2)+x(3-x)化简
(x+2)(x-2)+x(3-x)
=x²-4+3x-x²
=3x-4

(x+2)(x-2)+x(3-x)
=x^2-4+3x-x^2
=3x-4