1) x^2 = 64x = √64x = ±8
2) 3x^2 = 48x^2 = 48 / 3x^2 = 16x = ±4
3) y^2 - 10 = 39y^2 = 39 + 10y^2 = 49y = ±√49y = ±7
4) 5t^2 - 3 = 775t^2 = 77 + 35t^2 = 80t^2 = 80 / 5t^2 = 16t = ±√16t = ±4
1) x^2 = 64
x = √64
x = ±8
2) 3x^2 = 48
x^2 = 48 / 3
x^2 = 16
x = ±4
3) y^2 - 10 = 39
y^2 = 39 + 10
y^2 = 49
y = ±√49
y = ±7
4) 5t^2 - 3 = 77
5t^2 = 77 + 3
5t^2 = 80
t^2 = 80 / 5
t^2 = 16
t = ±√16
t = ±4