1.2345²＋2.469×0.7655＋0.7655²＝?

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1.2345²＋2.469×0.7655＋0.7655²＝?
1.2345²＋2.469×0.7655＋0.7655²＝?

1.2345²＋2.469×0.7655＋0.7655²＝?
1.2345²＋2.469×0.7655＋0.7655²
=1.2345²＋2×1.2345×0.7655＋0.7655²
=(1.2345+0.7655)²
=2²
=4