x-x×0.25=300
(X+X)+(X-X)+(X*X)+(X/X)=100
x-0.25=0.25x
x+x=x+15
10x-3.14*x*x*0.25=3.14*x*x*0.75 怎么算
数x满足x+1/x=-1,则x^300+1/x^300=?
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!)+.
16+0.2x=0.25x十9求x!
0.3x-x*0.25=21.15-7x
0.3x+7x-0.25x+=21.15
0.3x-x乘以0.25=21.15-7x
解方程:x^0.75-x^0.25=0.75 求x
解方程 0.3x+7x-0.25x=21.25