3(x-y)²-18(x-1)+27还有一个 3(x-1)²-18(x-1)+27
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![3(x-y)²-18(x-1)+27还有一个 3(x-1)²-18(x-1)+27](/uploads/image/z/6675653-29-3.jpg?t=3%EF%BC%88x-y%EF%BC%89%26%23178%3B-18%EF%BC%88x-1%EF%BC%89%2B27%E8%BF%98%E6%9C%89%E4%B8%80%E4%B8%AA+3%EF%BC%88x-1%EF%BC%89%26%23178%3B-18%EF%BC%88x-1%EF%BC%89%2B27)
3(x-y)²-18(x-1)+27还有一个 3(x-1)²-18(x-1)+27
3(x-y)²-18(x-1)+27
还有一个
3(x-1)²-18(x-1)+27
3(x-y)²-18(x-1)+27还有一个 3(x-1)²-18(x-1)+27
您好:
3(x-y)²-18(x-y)+27
=3【(x-y)²-6(x-y)+9】
=3(x-y-3)²
3(x-1)²-18(x-1)+27
=3【(x-1)²-6(x-1)+9】
=3(x-1-3)²
=3(x-4)²
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