Question

1.25(x-2)^2=4 2.x^2-x-20=0 3.9x^2-6x+1=(x-1)^2 4.(x+1)^2-3(x

Answer 1

1.5(x-2)=±2,则x=2.4或x=1.6

2.(x+4)(x-5)=0,则x=-4或x=5

3.(3x-1)²=(x-1)^2,则3x-1=±(x-1),则x=0或x=0.5

4.(x+1-2)(x+1-1)=0,则x=1或x=0

5.[3(x-2)+2](x-2)=0,则x=4/3或x=2