计算1.2345²+2.469×0.7655+0.7655²

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计算1.2345²+2.469×0.7655+0.7655²计算1.2345²+2.469×0.7655+0.7655²计算1.2345²+2.469

计算1.2345²+2.469×0.7655+0.7655²
计算1.2345²+2.469×0.7655+0.7655²

计算1.2345²+2.469×0.7655+0.7655²
原式=(1.2345+0.7655)^2=2^2=4!