(106)*(10x)*1/2=2/3*(1364x)

X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)X+X+X+(X-1)+(X

1)1+x+x^2=0,求1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^10的值2)1+x+x^2=0,求1+x+x^2+x^3+……+x^20的值1)1+x+x^2=0,求1+

1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11=17.7这个方程怎么样求解?1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10

(X-1)(X-2)=X*X-3X+2X*X-3X+2=(X-1)(X-3)X*X+4X+4=X(X-4)+4X*X+Y*Y=(X+Y)(X-Y)哪一个因式分解是正确的(X-1)(X-2)=X*X-3

(X+1)X(X+2)X(X+3)=504(X+1)X(X+2)X(X+3)=504(X+1)X(X+2)X(X+3)=504等价于x^3+6x^2+11x-498=0令左边等于y试根x=6时y=0做

1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少

(x+1)(x+2)(x+3)(x+4)(x+5)(x+6)(x+7)(x+8)(x+9)(x+10)请化简我说的是化简化成x^10+ax^9+bx^8+cx^7+......+n的形式(x+1)(x

1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+9)(x+10)=2,x等于多少?1/(x+10)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+9)(

3^x=2^x,求x.5^(x-1)·10^3x=8^x求x3^x=2^x,求x.5^(x-1)·10^3x=8^x求x3^x=2^x,求x.5^(x-1)·10^3x=8^x求x3^x=2^x两边除

求函数y=\x-1\+\x-2\+\x-3\+\x-4\+\x-5\+\x-6\+.+\x-10\的最小值我不知道绝对值怎么打,所以用\代替求函数y=\x-1\+\x-2\+\x-3\+\x-4\+\

(x+1)(x+2)=(),(x+3)(x-l)=().(x+1)(x+2)=(),(x+3)(x-l)=().(x+1)(x+2)=(),(x+3)(x-l)=().(x+1)(x+2)=(),(x

(3x+1)+(2x^2+5x-1)-3x^2,其中x=10(3x+1)+(2x^2+5x-1)-3x^2,其中x=10(3x+1)+(2x^2+5x-1)-3x^2,其中x=10/>原式=30+1+

3x^2-(2x^2+5x-1)-(3x+1),其中x=103x^2-(2x^2+5x-1)-(3x+1),其中x=103x^2-(2x^2+5x-1)-(3x+1),其中x=103x^2-(2x^2

(x-1)/(x+3x+2)+6/(2+x-x)-(10-x)/(4-x)(x-1)/(x+3x+2)+6/(2+x-x)-(10-x)/(4-x)(x-1)/(x+3x+2)+6/(2+x-x)-(

(x+1)(x+2)=2x+4一元二次方程（x+1）方=4x2x方-10x=3（x-2)(x-5)=-2(x+1)(x+2)=2x+4一元二次方程（x+1）方=4x2x方-10x=3（x-2)(x-5

(x-3/x-2)-(x-2/x-1)=(x-5/x4)-(x-4/x-3)(x-3/x-2)-(x-2/x-1)=(x-5/x4)-(x-4/x-3)(x-3/x-2)-(x-2/x-1)=(x-5

f(x)=|x+1|+|x+2|+|x+3|+...+|x+2011|+|x-1|+|x-2|+|x-3|+...+|x-2011|F(a∧2-3a+2)=f(a-1)求所有符合条件a的整数的和是f(

解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+

若x=-0.279,则|x-1|+|x-3|+.+|x-2001|-|x|-|x-2|-.-|x-2000|值为多少急若x=-0.279,则|x-1|+|x-3|+.+|x-2001|-|x|-|x-

x(x-2)-2x(x+1)-3x(x-5)其中x=负½x(x-2)-2x(x+1)-3x(x-5)其中x=负½x(x-2)-2x(x+1)-3x(x-5)其中x=负½x