3.766²+0.468×3.766+0.234²=?
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3.766²+0.468×3.766+0.234²=?
3.766²+0.468×3.766+0.234²=?
3.766²+0.468×3.766+0.234²=?
3.766²+0.468×3.766+0.234²
=(3.766+0.234)^2
=4^2
=16
原式=3.766²+2×0.234×3.766+0.234²
=(3.766+0.234)²=4²=16