x-[1/4x+(25%x-5)]=65 怎么解x-[1/4x+(25%x-5)]=65

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x-[1/4x+(25%x-5)]=65怎么解x-[1/4x+(25%x-5)]=65x-[1/4x+(25%x-5)]=65怎么解x-[1/4x+(25%x-5)]=65x-[1/4x+(25%x-

x-[1/4x+(25%x-5)]=65 怎么解x-[1/4x+(25%x-5)]=65
x-[1/4x+(25%x-5)]=65 怎么解
x-[1/4x+(25%x-5)]=65

x-[1/4x+(25%x-5)]=65 怎么解x-[1/4x+(25%x-5)]=65
x-[1/4x+(25%x-5)]=65
x-(1/4x+1/4x-5)=65
x-(1/2x-5)=65
1/2x+5=65
1/2x=60
x=120

X-[1/4X+(25%X-5)]=65
X-[1/4X+25%X-5] =65
X-1/2X+5 =65
1/2X =65-5
X=120

x-[1/4x+(25%x-5)]=65
x-x/4-x/4+5=65
x/2=60
x=120

x_[1/4x+1/4x_5]=65 x_1/2x+5=65 1/2x=60 x=120

x-[1/4x+(25%x-5)]=65 怎么解x-[1/4x+(25%x-5)]=65 *-----------------------------------------------*| 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 || x^2+2x-8/x^3+25x+x/(x-2/x-x+4/x+1,其中x=-4/5 解方程:(2x+5)(4x*x-10x+25)=8x(x*x+1) x-2x+3x-4x+5x.+99x-100x=25求解 (x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3) x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24)); matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24)); 提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-16x=30x*x-7x-15 求x,可以只要答案.如图,全是正方形,一个边长为1,一个边长为4,求总面积,你也可以用你的方法.上面那个方程是我列的.5x*X+7X-72=0 4x-5=25-9x+x 求x? 4/1x+(4/1x-5)+65=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 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