1) (4x-1)^{2}=16x^{2}-8x+1=16x^{2}-8x+1=16x^{2}-8x-1=0
2) (2x+3)^{2}=4x^{2}+12x+9=0
3) (5x-2x)^{2}=3x^{2}=0
4) 9x^{2}-1=(3x+1)(3x-1)=x=-1/3, x=1/3
5) 25x^{2}-100=25(x^{2}-4)=25(x+2)(x-2)=x=-2, x=2
1) (4x-1)^{2}=16x^{2}-8x+1=
16x^{2}-8x+1=
16x^{2}-8x-1=0
2) (2x+3)^{2}=4x^{2}+12x+9=0
3) (5x-2x)^{2}=3x^{2}=0
4) 9x^{2}-1=
(3x+1)(3x-1)=
x=-1/3, x=1/3
5) 25x^{2}-100=
25(x^{2}-4)=
25(x+2)(x-2)=
x=-2, x=2