用因式分解的方法计算42.7²+14.6×42.7+7.3²的值为
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用因式分解的方法计算42.7²+14.6×42.7+7.3²的值为
用因式分解的方法计算42.7²+14.6×42.7+7.3²的值为
用因式分解的方法计算42.7²+14.6×42.7+7.3²的值为
42.7²+14.6×42.7+7.3²
=42.7²+2×7.3×42.7+7.3²
=(42.7+7.3)²
=50²
=2500