x^2=(0.4X)(0.

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x^2=(0.4X)(0.
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x^2=(0.4X)(0.
x^2=(0.4X)(0.

x^2=(0.4X)(0.
X=0.4; 0.4X=0.16 这还用求救啊
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x^2=(0.4X)(0. 一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X 已知1/√(x)+√(x)=√5,求√(x/x2+x+1)+√(x/x2-x+1)的值定义域 x>0,两边平方,x+2+1/x=5,x+1/x=3,x^2-3x+1=0,x^2+x+1-4x=0,x^2+x+1=4x,x^2-x+1-2x=0.x^2-x+1=2x,√[x/(x^2+x+1)]-√[x/(x^2-x+1)]=√[x/(4x)]-√[x/2x]=√(1/4)-√(1/2) 请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360 300字读后感 2篇 俄把格式说一下吧:《xxxx》(写题目)主要内容:x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(写那篇文章的主要内容)思考分析:x x x 先化简,再求值(x²+x+1分之x²-4)÷(x³+x²+x分之x³-2x²)²乘以(x+2)³分之x,其中x²+2x-2=0. 已知实数x满足x²-3x+1=0.求(1)x+ 1/x (2)x²+ 1/x² (3)x-1/x已知实数x满足x²-3x+1=0.求(1)x+ 1/x (2)x²+ 1/x² (3)x-1/x x-0.4x=0. (x/x-2)-2=3(x-2)/x x+2x+(x+10)=90,x=? X.X=(X+2)x80%X 怎么样解? 函数f(x)=x²-2x(x X+X+2+X+4-(X+4)=26 (16x^4+4x^2+x)/x=? x(2x-3)=x² 求x, x+2/2x+2-x/2x=0.(x 2/2x 2)- (x/2x)=0.1 (x-1)(x-2)=0 (2x-1)²=9 x²-7x+6=0 x(x-1)=x 2x²-5x-12=0 2(x-1=(x-1)(x-2)=0 (2x-1)²=9 x²-7x+6=0 x(x-1)=x 2x²-5x-12=0 2(x-1=(x-1)(x-2) 2x²+3x-18=0 3x²+2x-5=0 x²-4x-7=0.解一元二 f(x)=-x^2+2x(x>0) 0(x=0) x^2-2x(x