[100x+10(x+4)+(x+2)]/[100(x+2)+10(x+4)+x]=7/4求x的值
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[100x+10(x+4)+(x+2)]/[100(x+2)+10(x+4)+x]=7/4求x的值
[100x+10(x+4)+(x+2)]/[100(x+2)+10(x+4)+x]=7/4求x的值
[100x+10(x+4)+(x+2)]/[100(x+2)+10(x+4)+x]=7/4求x的值
55
(111x+42)/(111x+240)=7/4 444x+168=777x+1680 333x=1512 x=168/37
已知f(x-1)=x²+4x-5则f(x)的表达式是() A x²+6x B x²+8x+7已知f(x-1)=x²+4x-5则f(x)的表达式是()A x²+6xB x²+8x+7C x²+2x-3D x²++6x-10
化简[(x的平方-4)/(x的平方-4X+4)-(2-X)/(X+2)]÷x/(x-2)-8/(X-2)B:8/(X-2)C:-8/(X+2)D:8/(X+2)
2x+3<9-x,x-4<3(x-2),2x-5>10-3x.2x+3<9-x,x-4<3(x-2),2x-5>10-3x.2x+1╱3+1<x.
x+3×(x+1)等于27 7x-2(x-5)=40 6x+4(10-x)=46
x+3×(x+1)等于27 7x-2(x-5)=40 6x+4(10-x)=46
[100x+10(x+4)+(x+2)]/[100(x+2)+10(x+4)+x]=7/4求x的值
f(x)=x/(1+x) x>=0 f1(X)=f(X) fn(X)=fn-1[fn-1(x)]求fn(x)证明:f1(X)+2f2(X)+3f3(x)+……+nfn(X)
3x²-(2x+5x-1),其中x=10
解方程:x-19分之5x-96+x-9分之x-8=x-6分之4x-19+x-8分之2x-21解方程:(x-19)分之(5x-96)+(x-9)分之(x-8)=(x-6)分之(4x-19)+(x-8)分之(2x-21)
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