求2^(2x+1)+2^(x+1)=5/8的解

x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x (x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几? 3^x=2^x,求x.5^(x-1)·10^3x=8^x求x 已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10| 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值, 已知x*x+x-1=0 求x*x*x-2x+11=? 已知x*x+x-1=0求x*x*x-2x+2010的值 (x-2)(x-4)-(x-1)(x-5)求过程 (x+2)(x-1)+(x+3)(x+1)=x·x-1 求x (5x-4)(2x+5)(3x-6)(2x-4)=(2x-4)(2x+5)·0.5 求x 1/6x=1/5x-2 求x 2x+1、5x=17、5求x 求y=(5x-1)/(4x+2) (x 2乘5^x=3^(x+1) 求x x-2/5x-(x-2/5x)2/3-(2/5x-1/3x)=30求x 已知x*x-5x=14,求(x-1)(2x-1)-(x+1)*(x+1)+1的值 已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-[1/5x*x-2x-5]的值. 已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-1/5x*x-2x-5的值.