(50±x)=100(25±x)+x^2意思
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x-2x+3x-4x+5x.+99x-100x=25求解
(50±x)=100(25±x)+x^2意思
(X+X)+(X-X)+(X*X)+(X/X)=100
解方程:x-2x+3x-4x+...+99x-100x=25
解方程:x-2x+3x-4x+.+99x-100x=25
x-2x+3x-4x+...+99x-100x=25
x+3x+x-2+x+x+50%x=188 求x
2x+3x+4x+5x+x+6x+7x=100
x X 2x=25
=(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
50x^2+25x-8=0求x
20%x+[25*(20%x)]+12=50%x+2
600-25X+100X-5X^2=840
x/2*50+100=50x
(x+1)+(x+2)+(X+3).+(x+50)=1325
x+ x+(x*50%)=1.5X?
x+2x+3x+.+100x