关于x的方程x-1分之1 x-2分之m
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公分母为0则2X(X-2)=0X不等于0X=2帮X=2代入方程解得a=3
6分之1-2x+3分之x+1=1-4分之2x+1两边乘122-4x+4x+4=12-6x-36x=3x=1/2代入x+3分之6x-a=6分之a-3x1/2+(3-a)/3=(a-3/2)/61/2+1
lz好像没有吧题目说完吧我猜是问k为何值时,等式有有有理解吧等式两边都乘x(x+1)后可以知道2x^2-k=(x+1)^2整理等式可以知道X^2-2X-1-k=0用△≥0就能知道k≥-2
1/x+2/(x-1)=2/(x^2-x)1/x+2/(x-1)-2/(x^2-x)=0(x-1)/x(x-1)+2x/x(x-1)-2/x(x-1)=0[(x-1)+2x-2]/x(x-1)=0(3
3-x=3x+2,x=1/4ax-a^2=2x+ba=2,b=4.a不等于2时,x=(b+a^2)/(a-2)
1:x²+X-2分之3=X-1分之X-X+2分之XX²+X-(X-1分之X)+X-2分之X=0X²+2X-(X-1分之X)-2分之X=0∵X-1≠0所以(X-1)(X
x^2-x分之x+1-3x-3分之x+k=3x分之1(x+1)/x(x-1)-(x+k)/3(x-1)=1/3x[3(x+1)-x(x+k)]/3x(x-1)=(x-1)/3x(x-1)3x+3-x&
解(x-1)/(x-5)=m/(10-2x)(x-1)/(x-5)=-m/2(x-5)两边乘以2(x-5)得:2(x-1)=-m∵方程无解∴x=5∴2×(5-1)=-m∴m=-8
(x+1)/(x^2-x)-1/3x=(x+k)/(3x-3)两边乘3x(x-1)3(x+1)-(x-1)=x(x+k)x^2+kx=2x+4增根就是分母为0所以x^2-x=0,3x=0,3x-3=0
x-a=5分之x-1+2a-14/5x=3a-2x=(15a-10)/42分之x-1
答:问题修正后——x-1分之1+x-2分之m=(x-1)(x-2)分之2(m+1)1/(x-1)+m/(x-2)=2(m+1)/[(x-1)(x-2)][(x-2)+m(x-1)]/[(x-1)(x-
1/(x-2)+k/(x+2)=4/(x²-4);(x+2+kx-2k)/(x²-4)=4/(x²-4);x+2+kx-2k=4;(k+1)x=2k+2;x=2;增根2吧
3a+7b=4b-33a+3b=-3a+b=-1
m/(x^2-x-2)=x/(x+1)-(x-1)/(x-2)m/(x-2)(x+1)=[x(x-2)-(x-1)(x+1)]/(x-2)(x+1)m=x(x-2)-(x-1)(x+1)=x^2-2x
两边乘以(x+1)(x-2)得m=x(x-2)-(x-1)(x+1)m=x²-2x-x²+12x=1-m∵解是正数∴1-m>01-m≠4x=2时是增根∴m
“数理答疑团”为您解答,希望对你有所帮助.x²+x-2=0x=-2和x=1是分式方程x的平方+x-2分之3=x-1分之x-x+2分之x的增根手机提问的朋友在客户端右上角评价点【满意】即可.
x+2/x=c+2/c~x1=c,x2=2/c;x+2/(x-1)=a+2/(a-1);(x-1)+2/(x-1)=(a-1)+2/(a-1);x1-1=a-1;x2-1=2/(a-1);x1=a;x
x/(x-1)+k/(x-1)-x/(x+1)=0两边乘以(x+1)(x-1)x(x+1)+k(x+1)-x(x-1)=0x=1是增根所以x=1是这个整式方程的根把x=1代入2+2k-0=0k=-1
x/x-1-1=m/(x-1)(x+2)有增根,∴x-1=0,x+2=0,∴x1=1,x2=-2.两边同时乘以(x-1)(x+2),原方程可化为x(x+2)-(x-1)(x+2)=m,整理得,m=x+
1/(x--2)+k/(x+2)=4/(x^2--4)去分母得:(x+2)+k(x--2)=4x+2+kx--2k=4(1+k)x=2+2kx=(2+2k)/(1+k)因为x=2是这个方程的增根,而当