x(x³+x²-x+1)-x²(x²+x-1)+1,其中x=3又1/2
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![x(x³+x²-x+1)-x²(x²+x-1)+1,其中x=3又1/2](/uploads/image/z/1024279-7-9.jpg?t=x%EF%BC%88x%26%23179%3B%2Bx%26%23178%3B-x%2B1%EF%BC%89-x%26%23178%3B%EF%BC%88x%26%23178%3B%2Bx-1%EF%BC%89%2B1%2C%E5%85%B6%E4%B8%ADx%3D3%E5%8F%881%2F2)
x(x³+x²-x+1)-x²(x²+x-1)+1,其中x=3又1/2
x(x³+x²-x+1)-x²(x²+x-1)+1,其中x=3又1/2
x(x³+x²-x+1)-x²(x²+x-1)+1,其中x=3又1/2
=(x的4次方-x的4次方)+(x³-x³)+(-x²+x²)+x+1
=x+1
∵x=3又1/2
∴原式=3又1/2+1
=4又1/2