将代数式-2x²+4x-18变形为a(x+m)²+n为_____,由此得该多项式有最____值为______

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将代数式-2x²+4x-18变形为a(x+m)²+n为_____,由此得该多项式有最____值为______将代数式-2x²+4x-18变形为a(x+m)²+n

将代数式-2x²+4x-18变形为a(x+m)²+n为_____,由此得该多项式有最____值为______
将代数式-2x²+4x-18变形为a(x+m)²+n为_____,由此得该多项式有最____值为______

将代数式-2x²+4x-18变形为a(x+m)²+n为_____,由此得该多项式有最____值为______
将代数式-2x²+4x-18变形为a(x+m)²+n为_-2(x-1)²-16____,由此得该多项式有最__大__值为_-16_____