[100(2X + 1) + 10X + 2X + 2] + [100(2X + 2) + 10(2X + 1) + X] = 1611 解出来,

x(x-1)(x-2)...(x-99)(x-100) (x^2-x)^2-18(x^2-x)+72(x+1)(x+2)-x-10 (x-1)/(x+3x+2)+6/(2+x-x)-(10-x)/(4-x) 因式分解(x+1)(x+2)-x-10(x²-x)²-18(x²-x)+72 100/x+1/2=150/(x+10) x=? 解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1 X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4) 100(3x-1)+10x+(2x+1)=100(2x+1)+10x+(3x+1)+99 100(3x-1)+10x+(2x+1)=100(2x+1)+10x+(3x-1)+99 100（3X-1)+10X+(2X+1)=100(2X+1)+10X+(3X-1)+99 100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10 100-2x+5x=120(x+3)×5-2x=30100-(4x+1)-(4x+1)=204x+8=6x-10 2（6X方+X）方-11（6X方+X）+5X四次方-10X方+9X三次方-7X方+12X（X+Y)方+2(X+Y)-15A四次方-21A方-100（X方+X）方-14（X方+X）+24X方（X-1）-Y方（X-1) *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 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-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4（x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1 1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少 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|