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x1+x2+x3+x4=20 1
2个回答
相关问题
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1.(x/2+20)/(x/3)=(x/2-20)/(x/4)
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1/(1x2x3)+1/(2x3x4)+1/(3x4x5)+.1/(20x21x22)=?
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1x2/1+2x3/1+3x4/1+4x5/1.19x20/1
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解方程(1)4x-3(20-x)=3(2)x-[2x+1/4]=[10x+1/17]-1.
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1.下列单项式:-x,2x^2,-3x^3,4x^4,…,-19x^19,20x^20,…
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解下列方程:(1)3x-7+6x=4x-8;(2)4x-3(20-x)=5x-7(20-x);(3)[2x−1/3−2x
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1.25(x-2)^2=4 2.x^2-x-20=0 3.9x^2-6x+1=(x-1)^2 4.(x+1)^2-3(x
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解下列方程:(1)3x-7+6x=4x-8;(2)4x-3(20-x)=5x-7(20-x);(3) 2x-1 3 -
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1x2+2x3+3x4+.+19x20
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X^1/2 - 4X^1/3=5X^1/6 -20 x=?