利用分解因式:1-2345²+0.7655²+2.469×0.7655
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利用分解因式:1-2345²+0.7655²+2.469×0.7655利用分解因式:1-2345²+0.7655²+2.469×0.7655利用分解因式:1-2
利用分解因式:1-2345²+0.7655²+2.469×0.7655
利用分解因式:1-2345²+0.7655²+2.469×0.7655
利用分解因式:1-2345²+0.7655²+2.469×0.7655
0.2345²+0.7655²+2.469×0.7655
=0.2345^2+2*0.2345*0.7655+0.7655^2
=(0.2345+0.7655)^2
=1^2
=1
1.2345²+0.7655²+2.469×0.7655
=1.2345²+2×1.2345×0.7655+0.7655²
=(1.2345+0.7655)²
=4
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