(50-x)/2+(50-x)/2*5+10x=240 求X值及步骤
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(50-x)/2+(50-x)/2*5+10x=240求X值及步骤(50-x)/2+(50-x)/2*5+10x=240求X值及步骤(50-x)/2+(50-x)/2*5+10x=240求X值及步骤(
(50-x)/2+(50-x)/2*5+10x=240 求X值及步骤
(50-x)/2+(50-x)/2*5+10x=240 求X值及步骤
(50-x)/2+(50-x)/2*5+10x=240 求X值及步骤
(50-x)/2+(50-x)/2*5+10x=240
(50-x)+5(50-x)+10x*2=240*2
50-x+250-5x+20x=480
14x+300=480
14x=480-300
14x=180
x=90/7
“(50-x)/2*5”能解释清楚点吗?
(50-x)/2+(50-x)/2*5+10x=240
(50-x)+5(50-x)+10x*2=240*2
50-x+250-5x+20x=480
14x+300=480
14x=480-300
14x=180
x=90/7
(50-x)/2+(50-x)/2*5+10x=240
(50-x)/2*6+10x=240
3(50-x)+10x=240
150-3x+10x=240
7x=90
x=90/7
我不是他舅 说的对
(50-x)/2+[(50-x)/2]*5+10x=240 求X值及步骤
(50-x)/2+[(50-x)/2]*5+10x=240
6(50-x)/2 +10x=240
3(50-x)+10x=240
150-3x+10x=240
7x=90
x=90/7
x+3x+x-2+x+x+50%x=188 求x
10x+2x*[(50-x)/2]+5x[(50-x)/2]=240
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x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)...(x-49)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
=(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
2x+8-10x+50=5x-10
2x+5=50-2x!
5x^2+x-50=0
2x+5*(50-x)=160
50/(x+2)=5 x=?.
250x - 2(x+50)(x+0.5)求x
(x+1)+(x+2)+(X+3).+(x+50)=1325
y=|x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|……+|x-99|+|x-100|+50n的最小值
x-1+x-2+x-3+x-4+x-5+x-50最小为x为一个自然数,x-1的绝对值+x-2的绝对值+x-3的绝对值+……+x-50的绝对值值最小为?
(50-x)/2+(50-x)/2*5+10x=240 求X值及步骤
x+2x+(32-2x)+3/5(32-2x)=50