马上就要答案,(x-1)2+2x(x-1)=0 2x2-4x-5=0 -3x2-4x+4=0 2(y+4)2+y(y+4)=01:(x-1)2+2x(x-1)=02:2x2-4x-5=0 3:-3x2-4x+4=0 4:2(y+4)2+y(y+4)=0

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/15 07:02:54
马上就要答案,(x-1)2+2x(x-1)=0 2x2-4x-5=0 -3x2-4x+4=0 2(y+4)2+y(y+4)=01:(x-1)2+2x(x-1)=02:2x2-4x-5=0 3:-3x2-4x+4=0 4:2(y+4)2+y(y+4)=0

马上就要答案,(x-1)2+2x(x-1)=0 2x2-4x-5=0 -3x2-4x+4=0 2(y+4)2+y(y+4)=01:(x-1)2+2x(x-1)=02:2x2-4x-5=0 3:-3x2-4x+4=0 4:2(y+4)2+y(y+4)=0
马上就要答案,(x-1)2+2x(x-1)=0 2x2-4x-5=0 -3x2-4x+4=0 2(y+4)2+y(y+4)=0
1:(x-1)2+2x(x-1)=0
2:2x2-4x-5=0
3:-3x2-4x+4=0
4:2(y+4)2+y(y+4)=0

马上就要答案,(x-1)2+2x(x-1)=0 2x2-4x-5=0 -3x2-4x+4=0 2(y+4)2+y(y+4)=01:(x-1)2+2x(x-1)=02:2x2-4x-5=0 3:-3x2-4x+4=0 4:2(y+4)2+y(y+4)=0
1.(x-1)^2+2x(x-1)=0
x^2-2x+1+2x^2-2x=0
3x^2-4x+1=0
(3x-1)(x-1)=0
x1=1/3 x2=1
2.2x^2-4x-5=0
x^2-2x+1=3.5
x-1=土√3.5
x1=1+√3.5 x2=1-√3.5
3.-3x^2-4x+4=0
3x^2+4x-4=0
(3x-2)(x+2)=0
x1=2/3 x2=-2
4.2(y+4)^2+y(y+4)=0
2(y+4)+y=0
2y+8+y=0
y=-8/3 .

还来找人帮你做作业啊

x=±1
x=-¼
x=-½
y=-4