(2x+60):(3x-60)=7:3 怎么解
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7x-3x+x=60
(4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60)
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x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
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
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
2x+3x+4x+5x+x+6x+7x=100
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
9x-3+2x+1=7x+60-5x+1
(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
(X-1)(X-2)(X+2)(X+3)=60(X-1)(X-2)(X-3)(X-4)+1=0(X-5)/(X-6)+(X-8)/(X-9)=(X-7)/(X-8)+(X-6)/(X-7)
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
怎样分解这几道题——多项式分解F(X)=2X^3+9X^2-53X-60F(X)=4X^3+5X^2-3F(X)=3X^4+2X^3-X+15F(X)=X^3+2X^2-11X-12F(X)=X^3+X^2-2X-2F(X)=X^3+9X^2-4X-36F(X)=X^4+X^3+X^2-9X-10F(X)=X^4-3X^3+6X^2-2X-12F(X)=X^5-X^4-7X^3+11X^2-8X+12我确定我没有
3x-60=x
60+3x=120+2x x=?
x/50-3=x/60+2 求x
x-2/3x+x+2/7x=30
x(x+2)(x+3)(x+5)=7