x-0.5x=21
8x-0.5x=0.5x-21怎么算
(X+X)+(X-X)+(X*X)+(X/X)=100
4X+0.5X=13.5X
x+0.5x=30
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
1. x+0.5x=6 4x+16=40 x/5=32% x-4/9x=10/21 x-1/8x=5/8 7x÷2=2.
x+x=x+15
6X-(360X-0.5X)=2×(360X-0.5X)
(X-4)(x-2)-2(X-1)(X+3)其中X=-0.5
请问 x+(x+7)+(x+14)+(x+21)+(x+28)=75 这个方程式怎么解?
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.