3(X-2)=9.6怎么算
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16(x-2)*(x-2)=9(x+3)*(x+3)==>16(x-2)*(x-2)-9(x+3)*(x+3)=0==>[4(x-2)+3(x+3)]*[4(x-2)-3(x+3)]=0==>[7x+
=2/x^2-2*(2x+3)/x^3=-(2x+6)/x^3
2x-3x-5=0-x=5x=-5
(2x+1)²-(x+3)(3-x)=6x4x²+4x+1-9+x²-6x=05x²-2x-8=0x=2±根号(4+160)/10=(2±2根号41)/10=5
x=5啊
x²+3x=2x²+3x+9/4=2+9/4(x+3/2)²=17/4x+3/2=±√17/2x=(-3-√17)/2,x=(-3+√17)/2再问:我觉得亲的好麻烦再问
结果等于18000
4+6X(3x-2)=16x4+18x-12=16x18x-16x=12-42x=8x=4
这也问?x=6.2*9/3=6
利用十字相乘法,(x-1)(x-2)=0,x=1或者2
原式=2x^2-6x+2-3x+3+x^2=3x^2-9x+5
10753286452x-1/2[x-1/2(x-1)]=2/3(x-1)2x-1/2[x-1/2x+1/2]=2/3x-2/32x-1/2[1/2x+1/2]=2/3x-2/32x-1/4x-1/4
4x+3=5x-23+2=5x-4xx=5
(x+4)²-18=3x(x+2)x^2+8x+16-18=3x^2+6x-2x^2+2x-2=0x^2-x+1=0△=(-1)²-4x1x1=1-4=-3<0所以原方程无实数解
x^2-3x+2=0(x-2)(x-1)=0x=2或x=1
(-x+2x²+5)+(4x²-3-6x)=-x+2x²+5+4x²-3-6x=6x²-7x+2
x-2/3x=2/9x/3=2/9x=2/3
x/2+3x/3=2.25x/2+x=2.253x/2=2.25x=1.5
题目正确?按你的题那是太简单了啊3f(x)+2f(x)=x5f(x)=xf(x)=x/5再问:要求出X的具体数值再答:呵呵,实在看不懂你的题意,没见识过!就凭这能求出x的值?一般都是求f(x)还差不多
3x-2x=31x=3x=3再答:求采纳