1) x^2-1=0
x=+/-1
2) 25x^2-16=0
(5x-4)(5x+4)=0
x=4/5
x = -4/5
3) (x-6)(x+6)=0
x=-6
x=6
4) (y-7)(y+7)=0
y=7
y=-7
5) (y-0.5)(y+0.5)=0
y= +/- 0.5
6) (8-3x)(8+3x)=0
x= +/-8/3
7) (3x-2)(3x+2)=0
x=-/+ 2/3
8) z^2=16
z=-/+4
9) 4x^2=9
x=+/-2/3
10) (x-0.2)(x+0.2)=0
x=-/+ 0.2
11) (4x-3)(4x+3) = 0
x= -/+ 3/4
1) x^2-1=0
x=+/-1
2) 25x^2-16=0
(5x-4)(5x+4)=0
x=4/5
x = -4/5
3) (x-6)(x+6)=0
x=-6
x=6
4) (y-7)(y+7)=0
y=7
y=-7
5) (y-0.5)(y+0.5)=0
y= +/- 0.5
6) (8-3x)(8+3x)=0
x= +/-8/3
7) (3x-2)(3x+2)=0
x=-/+ 2/3
8) z^2=16
z=-/+4
9) 4x^2=9
x=+/-2/3
10) (x-0.2)(x+0.2)=0
x=-/+ 0.2
11) (4x-3)(4x+3) = 0
x= -/+ 3/4