5x=50

X-X/12-X/7-X/8-X/4-X/20-X/5-30-120-300=50解方程 10x+2x*[(50-x)/2]+5x[(50-x)/2]=240 x+ x+(x*50%)=1.5X? 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!)+. 50X+(50-5)(X+1)=425,x=? 5x^-15x=50除以5x 解方程：60%x+5+50%x-25=x x-5%x-50%x×60%=36解方程 5(x/10+x/12)=x-50怎么解 2x+8-10x+50=5x-10 =（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^2-5x)^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 1.2x-5=x+5 1.2x-x=5+5 0.2x=10 x=50 4x+5=50 x= 50/(x+2)=5 x=?. 2.5x-50=x-5 8/5x-20=50-x x+5+x=50 怎么解