1.2345^2+0.7655^2+2.469X0.7655

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1.2345^2+0.7655^2+2.469X0.76551.2345^2+0.7655^2+2.469X0.76551.2345^2+0.7655^2+2.469X0.7655原式=(1.2345

1.2345^2+0.7655^2+2.469X0.7655
1.2345^2+0.7655^2+2.469X0.7655

1.2345^2+0.7655^2+2.469X0.7655
原式=(1.2345+0.7655)^2
=2^2
=4