1.159的平方+1.159x7.682+3.841的平方 怎么简便计算
问题描述:
1.159的平方+1.159x7.682+3.841的平方 怎么简便计算
答
1.159²+1.159×7.682+3.841²
=1.159²+2×1.159×3.841+3.841²
=(1.159+3.841)²
=5²
=25
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