若x^2+x-1=0,则7x^2+7x
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若x^2+x-1=0,则7x^2+7x若x^2+x-1=0,则7x^2+7x 若x^2+x-1=0,则7x^2+7x
若x^2+x-1=0,则7x^2+7x
若x^2+x-1=0,则7x^2+7x
若x^2+x-1=0,则7x^2+7x
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
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填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值
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,
若|x|=7,若|x|=0 则x= 5-3x²+5x-(2x²-3x) (X²-3x+1)(三分之二x²-5x-3)
若x^2+x-1=0,则7x^2+7x
若X方-X-1=0,则2X方-2X+7=
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
若x*x+x+1+0,求x^7+2x^6+x^5+x^4+x^3+x*x+1的值
若x^3+x^2+x+1=0,则x^-27+x^-26+x^-25+……+x^-1+1+x+……+x^26+x^27
若分式|x-1|分之x^2-7x-8若分式|x-1|分之x^2-7x-8的值是0 则x=
(x+1)/(x+2)+(x+8)/(x+9)解答x+1/x+2+x+8/x+9=x+2/x+3+x+7/x+8
若 x^2-3x-1=0 求 2x^4-7x^3+5x^2-x+4
若x+1/x=3,则x^4-x^3+2x^2-3x+7的值为
设f(x)=x(2x-1)(x+3)(x-7),则f'(x)=0有几个正根