计算:(x²-2x+3)*(x²+2x+3)要过程
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计算:(x²-2x+3)*(x²+2x+3)要过程
计算:(x²-2x+3)*(x²+2x+3)要过程
计算:(x²-2x+3)*(x²+2x+3)要过程
(x²-2x+3)*(x²+2x+3)
=[(x²+3)+2x]*[(x²+3)-2x]
=(x²+3)²-4X²
=X4+6X²+9-4X²
=X4+2X²+9
(x²-2x+3)(x²+2x+3)
=(x²+3)²-4x²