x/80 +6=x/50 -3

80(x-6)=50(x+3) x/80 +6=x/50 -3 3x*x=1600+x*x-80x x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? x+3x+x-2+x+x+50%x=188 求x 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 2x+3x+4x+5x+x+6x+7x=100 =(x^2-5x)^2+10(x^2-5x)+24 =x^4-10x^3+25x^2+10x^2-50x+24 这是怎么转化的(X-1)(X-2)(X-3)(X-4) =(X-1)(X-4) (X-2)(X-3)=（x^2-5x+4)(x^2-5x+6)=(x^2-5x)^2+10(x^2-5x)+24=x^4-10x^3+25x^2+10x^2-50x+24=x^4-10x^3+35x^2-50x+24 =（x^2-5x+4)(x^2-5x+6) =(x^2-5x)^2+10(x^2-5x)+24 是怎么转化的(X-1)(X-2)(X-3)(X-4) =(X-1)(X-4) (X-2)(X-3)=（x^2-5x+4)(x^2-5x+6)=(x^2-5x)^2+10(x^2-5x)+24=x^4-10x^3+25x^2+10x^2-50x+24=x^4-10x^3+35x^2-50x+24不好意思我弄错了，是=（x^2-5 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 X(x平方-6x-9)-x(x平方-8x-15)+2x(3-x)其中x=-六分之一 解方程,亲们帮帮忙!2／3＋50％x＝1.6 x＝?x-40%x=0.96 x=?4/5x-1/2x=6.4 x=?80%x-0.6x=0.12 x=?1/2(x-80%)=0.6 x=?4(x+1/4)=16 x=?40%+20%x+7.2 x=?5/6(x-40%)=2 3x+5x-6x=? x/80+3=x/50 y=|x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|……+|x-99|+|x-100|+50n的最小值 *-----------------------------------------------*| 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 || 80(x-6)=50(x+3)怎么算