利用因式分解进行计算:1/2x5.7²-5.7×3.7+1/2×3.7²

问题描述:

利用因式分解进行计算:1/2x5.7²-5.7×3.7+1/2×3.7²

1/2x5.7²-5.7×3.7+1/2×3.7²
=1/2x(5.7²-2×5.7×3.7+3.7²)
=1/2×(5.7-3.7)²
=1/2×2²
=2