(x-3/x^2+3x+2)*(x^2/x^2-4x+3),(x^2-1/x-1÷x^2-x/x^2-2x+1) 这两道
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/11 18:21:24
(x-3/x^2+3x+2)*(x^2/x^2-4x+3),(x^2-1/x-1÷x^2-x/x^2-2x+1) 这两道题怎么算
(x-3/x^2+3x+2)*(x^2/x^2-4x+3)
=(x-3)/(x+2)(x+1)×x²/(x-3)(x-1)
=x²/(x+2)(x+1)(x-1)
怀疑本题是
(x-3/x^2+3x+2)*(x^2 -1 /x^2-4x+3),
=(x-3)/(x+2)(x+1)×(x+1)(x-1)/(x-3)(x-1)
=1/(x+2)
(x^2-1/x-1÷x^2-x/x^2-2x+1)
=(x+1)(x-1)/(x-1)×(x-1)²/x(x-1)
=(x+1)×(x-1)/x
=(x²-1)/x
=(x-3)/(x+2)(x+1)×x²/(x-3)(x-1)
=x²/(x+2)(x+1)(x-1)
怀疑本题是
(x-3/x^2+3x+2)*(x^2 -1 /x^2-4x+3),
=(x-3)/(x+2)(x+1)×(x+1)(x-1)/(x-3)(x-1)
=1/(x+2)
(x^2-1/x-1÷x^2-x/x^2-2x+1)
=(x+1)(x-1)/(x-1)×(x-1)²/x(x-1)
=(x+1)×(x-1)/x
=(x²-1)/x
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
1+x+x^2+x^3+.+x^99+x^100