10 4(x-3)=2x-1怎么做
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(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
是这样的:x^5+x^4=x^3(x^2+x)=(x^2+x)[(x^3-1)+1]=(x^2+x)(x^3-1)+x^2+x=[x(x+1)(x-1)](x^2+x+1)+x^2+x=(x^3-x)
1.3/4x=2x=8/3
解x(x+2)-(x+1)(x+2)=3x²+2x-(x²+3x+2)=3x²+2x-x²-3x-2=3-x=5x=-5再问:��x-1����x+2����ô
这个式子有问题啊应该是(3-2x)/(1-x)-1=(x+2)/(x-3)先通分[(3-2x)-(1-x)]/(1-x)=(x+2)/(x-3)化简(2-x)/(1-x)=(x+2)/(x-3)即(2
3x/x²-1+x²-1/2x=5/2设x/x²-1为k则化为3k+1/2k=5/2两边乘以2k得6k²-5k+1=0(2k-1)(3k-1)=0k=1/2或者
小学.会分解质因数吧把360=2*2*2*3*3*5,6个数字4个小朋友其中肯定有2个数字就是小朋友的年龄,剩下的4个数字要做组合.所以一看就知道,3,4,5,6了~
x(x+2)-(x-1)(x+2)=3(x+2)(x-x+1)=3x+2=3x=1
可知Y=0时X=-3或-1或0或2,这四个点将X的定义域分成五个子定义域,在每个子定义域内可以将绝对值号去掉,然后整理整理之后在画图就容易多了!
x=solve('y=4*x*x*x+3*x*x+x+2*x+1','x')x=1/4*(-3+8*y+2*(9-12*y+16*y^2)^(1/2))^(1/3)-3/4/(-3+8*y+2*(9-
可以设g(x)=(2x-3)^4,h(x)=(x^2+x+1)^5则f(x)=g(x)h(x)f'(x)=g'(x)h(x)+g(x)h'(x)g'(x)=4(2x-3)^3(2-0)=8(2x-3)
同乘以(x-1)(2x+1),得:2x-3(2x+1)=-(x-1)(2x+1),2x^2-5x-4=0,得x=5/4正负根号13/2
3x+1/3x=x+2(x+10)10/3x=x+2x+2*1010/3x=3x+20(10/3-3)x=201/3x=201/3x*3=20*3x=60
x/(x-2)=(x-4)/(x-5)方程两边同乘(x-2)(x-5),得:x(x-5)=(x-4)(x-2)x^2-5x=x^2-6x+8x=8x/(x-3)=(x+1)/(x-1)x^2-x=x^
(2x+1)²-(x-3)(2x-1)=3x4x²+4x+1-(2x²-x-6x+3)=3x4x²+4x+1-2x²+7x-3=3x2x²+
x=28再问:写清楚解答过程啊再答:25/28x=x-33=x-25/28x3=3/28xx=3*28/3x=28
等式两边*(X-2)(X+3)2(X+3)+x(X-2)=(X-2)(X+3)2X+6+X平方-2X=X平方+X-6X=12
7x-3(2/3x+1/5x)-(x+2/5x)+2x=5x7x-2x-3/5x-x-2/5x+2x,=5x7x-x=5x6x=5x6x-5x=0x=0再问:大哥=5x怎么求出再问:大哥=5x怎么求出
x(x+2)-(x-1)(x+2)=3(x²+2x)-(x²+x-2)=3x²+2x-x²-x+2=3x+2=3x=3-2x=1