(1)x²-2x=99
x²-2x+1=99+1
(x-1)²=100
x-1=±10
x1=-9,x2=11
(2)(2x-1)²+3(2x-1)=0
(2x-1)(2x-1+3)=0
(2x-1)(2x+2)=0
x1=1/2,x2=-1
祝你开心!希望能帮到你,如果不懂,请追问,祝学习进步!O(∩_∩)O
(1)x²-2x=99
x²-2x+1=99+1
(x-1)²=100
x-1=±10
x1=-9,x2=11
(2)(2x-1)²+3(2x-1)=0
(2x-1)(2x-1+3)=0
(2x-1)(2x+2)=0
x1=1/2,x2=-1
祝你开心!希望能帮到你,如果不懂,请追问,祝学习进步!O(∩_∩)O