4(1/16+1/20)+1/10x-1/20x=1
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
x-10=4(x-28) 3(x-28)=x+56+28 2(1.5x-30-20)=x 2(2x-20-45)=x-1
已知x-4/x=6,求代数式2x²-20x/x²-14x+4除(1-x-12/2-x)的值
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x/2+x/8+x/12+x/20=1
4(x+3)=2x+2 7(x-1)=2x+3 4x+20=6x-30 4x-12=2x 2x-3=x+7 3x-4=2
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
X+1-3X=5X+10 6-3X=5X-20
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),