1.234²+0.766²+2.468×0.766=
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1.234²+0.766²+2.468×0.766=
1.234²+0.766²+2.468×0.766=
1.234²+0.766²+2.468×0.766=
=(1.234+0.766)²=4
1.234²+0.766²+2.468×0.766=
1.234²+0.766²+2.468×0.766=
1.234²+0.766²+2.468×0.766=
=(1.234+0.766)²=4