(10-2x)(8-x)=10×8×(1-30%),
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
解方程:1/x(x+2)+1/(x+2)(x+4)+……+1/(x+8)(x+10)=5/24(x+10)
(1)2x的10次方+x的8次方.x²-x.x³.x的6次方
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
4x-3(x-5)=2x+(x-1) (3x+29)除以8=4x 7(x+10)=5(4x-10) 5分之2(x-15)
解方程1/x(x+1)+1/(x+1)(x+2)+...+1/(x+8)(x+9)=2x+3/x(x+9)
解方程:1\x(x+1)+1\(x+1)(x+2)+.+1/(x+8)(x+9)=2x+3\x(x+9)
(2x-2)(x-1)=0 x(x-5)=5x-10
3X+(X+2)+(X+1)*(X-1)=4*(X²+8)
(X-X*20%-18-(X-X*20%-18)*10%=X*1/2-3(过程)
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