4X²-1/2-4x÷4X²+4X+1/X 先化简,再求值,X=-1/4
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![4X²-1/2-4x÷4X²+4X+1/X 先化简,再求值,X=-1/4](/uploads/image/z/1024426-10-6.jpg?t=4X%26%23178%3B-1%2F2-4x%C3%B74X%26%23178%3B%2B4X%2B1%2FX+%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%2CX%3D-1%2F4)
4X²-1/2-4x÷4X²+4X+1/X 先化简,再求值,X=-1/4
4X²-1/2-4x÷4X²+4X+1/X 先化简,再求值,X=-1/4
4X²-1/2-4x÷4X²+4X+1/X 先化简,再求值,X=-1/4
4X²-1/2-4x÷4X²+4X+1/X
=(2x+1)(2x-1)/[-2(2x-1)]× x/(2x+1)²
=-x/[2(2x+1)]
=1/4÷ (-1+2)
=1/4