1.(x-5)^2+2(x-5)+1=02.9(x-1)^2-4(x+2)^2=0

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/27 15:39:52
1.(x-5)^2+2(x-5)+1=02.9(x-1)^2-4(x+2)^2=01.(x-5)^2+2(x-5)+1=02.9(x-1)^2-4(x+2)^2=01.(x-5)^2+2(x-5)+1

1.(x-5)^2+2(x-5)+1=02.9(x-1)^2-4(x+2)^2=0
1.(x-5)^2+2(x-5)+1=0
2.9(x-1)^2-4(x+2)^2=0

1.(x-5)^2+2(x-5)+1=02.9(x-1)^2-4(x+2)^2=0
.(x-5)^2+2(x-5)+1=0
(x-5+1)^2=0
(x-4)^2=0
x=4
.9(x-1)^2-4(x+2)^2=0
[3(x-1)+2(x+2)][3(x-1)-2(x+2)]=0
(5x+1)(x-7)=0
x=-1/5 或 x=7

1.x^2-x-202.(x-4)(x+5)=4-x3.x^2+6x-5=04.2x^2-4x-1=0 1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x 5/x^2+x - 1/x^2-x=0 (2x-2)(x-1)=0 x(x-5)=5x-10 1.(x*2-3x+3)/(x*2-3x+2)-(x*2-5x+7)/(x*2-5x+6)-1/(x*2-4x+3)2.1/x(x+1)+2/(x+1)(x+3)+3/(x+3)(x+6) 3.已知:x*2-3x+1=0,求x*2+1/x*2. 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值, 已知1/√(x)+√(x)=√5,求√(x/x2+x+1)+√(x/x2-x+1)的值定义域 x>0,两边平方,x+2+1/x=5,x+1/x=3,x^2-3x+1=0,x^2+x+1-4x=0,x^2+x+1=4x,x^2-x+1-2x=0.x^2-x+1=2x,√[x/(x^2+x+1)]-√[x/(x^2-x+1)]=√[x/(4x)]-√[x/2x]=√(1/4)-√(1/2) *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 1、1/2x=2/x+32、x/x+1=(2x/3x+3)+13、2/x-1=4/x²-14、5/x²+x-1/x²-x=0 一元二次方程解答!x(5x+4)=5x+44x^2-45=31x-3x^2+22x-24=0(x+8)(x+1)= -12(3x+2)(x+3)=x+14 解分式方程(化为一元二次方程) 1.x^2+2/x+6x/x^2+2=5 2.x^2-9/1+3x/1=x^2+6x+9 3.x^2+x+1=x^2+x/24.2(x^2+x^2/1)-(x+x/1)+1=0 5.x^4+x^4/1=x^2+X^2/1 能做多少就多少,写出最简公分母, 1.判别下列函数的奇偶数性:(1) f(x)=|x+1|+|x-1|;(2)f(x)=3/x²;(3)f(x)=x+1/x;(4)f(x)=x/1.x²;(5)x∈[-1,3]2.f(x)=(x+1)(x+a)/x为奇函数,则a=__________.3.已知函数f(x)(x∈R)是奇函数,且x≥0时,f(x) 已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-[1/5x*x-2x-5]的值. 已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-1/5x*x-2x-5的值. 分式方程的.5/x^2+x-1/x^2-x=0(5/x^2+x)-(1/x^2-x)=0 若x^3+x^2+x+1=0,求代数式1+x+x^2+x^3+x^4+x^5+...+x^2006+x^2007的值