先化简,后求值:[(x-y)²+(x-y)(x-y)]÷2x,其中x=3,y=1.5
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![先化简,后求值:[(x-y)²+(x-y)(x-y)]÷2x,其中x=3,y=1.5](/uploads/image/z/5254137-9-7.jpg?t=%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%90%8E%E6%B1%82%E5%80%BC%EF%BC%9A%EF%BC%BB%EF%BC%88x-y%EF%BC%89%26%23178%3B%2B%EF%BC%88x-y%EF%BC%89%EF%BC%88x-y%EF%BC%89%EF%BC%BD%C3%B72x%2C%E5%85%B6%E4%B8%ADx%3D3%2Cy%3D1.5)
先化简,后求值:[(x-y)²+(x-y)(x-y)]÷2x,其中x=3,y=1.5
先化简,后求值:[(x-y)²+(x-y)(x-y)]÷2x,其中x=3,y=1.5
先化简,后求值:[(x-y)²+(x-y)(x-y)]÷2x,其中x=3,y=1.5
[(x-y)²+(x-y)(x-y)]÷2x
=2[(x-y)²]÷2x
=[(x-y)²]÷x
=【3-1.5】²÷3
=1.5²÷3
=2.25÷3
=0.75