1.234²+0.766²+2.468乘以0.766
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 12:28:22
![1.234²+0.766²+2.468乘以0.766](/uploads/image/z/4317477-69-7.jpg?t=1.234%26%23178%3B%2B0.766%26%23178%3B%2B2.468%E4%B9%98%E4%BB%A50.766)
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1.234²+0.766²+2.468乘以0.766
1.234²+0.766²+2.468乘以0.766
1.234²+0.766²+2.468乘以0.766
1.234²+0.766²+2.468×0.766
=1.234²+2×1.234×0.766+0.766²
=(1.234+0.766)²
=2²
=4
1.234²+0.766²+2.468乘以0.766
=1.234²+0.766²+2x1.234x0.766
=(1.234+0.766)平方
=2平方
=4
没看出来是完全平方和吗?
1.234²+0.766²+2.468乘以0.766
=(1.234+0.766)^2
=4