(80%x-x+50)*10=(50-30)*12怎么解
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/24 05:56:59
(80%x-x+50)*10=(50-30)*12怎么解(80%x-x+50)*10=(50-30)*12怎么解(80%x-x+50)*10=(50-30)*12怎么解算不就得了(0.8x-x+50)
(80%x-x+50)*10=(50-30)*12怎么解
(80%x-x+50)*10=(50-30)*12怎么解
(80%x-x+50)*10=(50-30)*12怎么解
算不就得了
(0.8x-x+50)*10=20*12
(-0.2x+50)*10=240
-2x+500=240
-2x=-260
x=130
80%x=0.8x
x=130
x+3x+x-2+x+x+50%x=188 求x
80%X*(1+50%)=10+X 求X是多少?
=(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
(50-x)*(80+10x)=0,
80(x-6)=50(x+3)
x/80 +6=x/50 -3
x/80+3=x/50
(x+x+23+x+50)=3x 怎么解
(x+1)+(x+2)+(X+3).+(x+50)=1325
x+ x+(x*50%)=1.5X?
x(10-x)=50 x=?x(10-x)=50x=?
x/50-3=x/60+2 (15+25/x)=120/10+x
0.5X-30+1/3*[X-(0.5X-30)]+10+50=X
化简:2x^2-50/x^2-10x+25(x=3)
3x*x=1600+x*x-80x
30-3(3-X)=4X 3X+12*6=15X+12 4X-2(50-X)=20 12(X-13)=10(X+3) 100-X=3(20+X)
解方程:(1)2x-19=7x+31 (2)20-2x=x-1 (3)19-x=100-10x (4)1/3x+5=2/3x-62x-19=7x+317x-2x=-19-31这里应该是31+19吧?5x=-50x=-50÷5x=-10