2017-x/2018+x=2/3

(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-3X+2X*X-3X+2=(X-1)(X-

已知关于x的二次多项式：a(X*X*X-X*X+3X)+b(2X*X+X)+X*X*X-5当X=2时值为－17,求当X=-2时该多项式的值.已知关于x的二次多项式：a(X*X*X-X*X+3X)+b(2X*X+X)+X*X*X-5当X=2时

(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做整式除法y/(x-6)=x^2+12x+

已知X=4-根号3求(X*X*X*X-6X*X*X-2X*X+18X+23)/(X*X-8X+15)的值紧急,,明天有用,,已知X=4-根号3求(X*X*X*X-6X*X*X-2X*X+18X+23)/(X*X-8X+15)的值紧急,,明天

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

(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/x4)-(x-4/x-3)

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+6)x/(x-2)=2x/(x-3)+(

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-2|-.-|x-2000|值为多少急若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(x-2)-2x(x+1)-3x(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(x)=|x+1|+|x+2|+|x+3|

x-2x+3x-4x+5x.+99x-100x=25求解x-2x+3x-4x+5x.+99x-100x=25求解x-2x+3x-4x+5x.+99x-100x=25求解x(1-2+3-4+...+99-100)=25x[(1-2)+(3-4

x+3x+x-2+x+x+50%x=188求xx+3x+x-2+x+x+50%x=188求xx+3x+x-2+x+x+50%x=188求xx+3x+x-2+x+x+50%x=188（1+3+1+1+1+0.5）x=188+27.5x=190

2x+3x+4x+5x+x+6x+7x=1002x+3x+4x+5x+x+6x+7x=1002x+3x+4x+5x+x+6x+7x=1002x+3x+4x+5x+x+6x+7x=10028x=100x=100/28x=25/727x=100

已知X=-0.239,求|X-1|+|X-3|+|X-5|+.+|X-1999|-|X|-|X-2|-|X-4|-.-|X-1998|的值谁帮我做一下已知X=-0.239,求|X-1|+|X-3|+|X-5|+.+|X-1999|-|X|-

x(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=27求xx(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=27求xx(x+1)+(x+2)+(x+3)+(x+4)+(x+5)=27求xx²＋x＋x＋2＋x

请问这道题咋做：（x）X(x+1)X(x+2)X(x+3)=360请问这道题咋做：（x）X(x+1)X(x+2)X(x+3)=360请问这道题咋做：（x）X(x+1)X(x+2)X(x+3)=360x(x+3)(x+1)(x+2)=360(

f(x)=[1+x+x^2+x^3+...+x^47]/[1+x+x^2+x^3+...+x^98],求f'(-1)f(x)=[1+x+x^2+x^3+...+x^47]/[1+x+x^2+x^3+...+x^98],求f'(-1)f(x)

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

x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7x=?x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7x=?x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7x=?x+2/x+1-x+4/x+3=x+

x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002x^4+x^3+x^2+x+1=