25X-13=5X+17
25X-13=5X+17
(2x^-5x+2/6x^+13x+6)*(6x^-5x-6/6x^-17x+10)*(12x^+8x-15/2x^-x
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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!)+.
解方程:(2x+5)(4x*x-10x+25)=8x(x*x+1)
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
解方程:x(x的平方-2)+2x的平方(x+3)-3x(5x-7)=x(3x的平方-9x+17)+2
已知2x*x+x-5=0,求代数式6x*x*x+7x*x-13x+11的值
解分式方程:4/5x+x/(5x-25)=5/(x^2-5x)
[1].x-16.4=80 [2]28-2x=13 [3]3x+2x=25 [4]32-2x=30 [5] [x+5]*
4+6×(3x-2)=16x 13x-4(2x+5)=17(x-2)-4(2x-1)
{20%x+25}/{x-20%x-25}=5/6