1. 2x²-8 = 0
2x² = 8
x² = 4
x1 = 2, x2 = -2
2. 2y² = 18
y² = 9
y1 = 3, y2 = -3
3. kt²=k
t²=1
t1=1, t2 =-1
4. 2a(16a²-1)=0
2a=0 или 16a²-1 = 0
a=0 16a²=1
a²=1/16
a= 1/4
a=0.25
1. 2x²-8 = 0
2x² = 8
x² = 4
x1 = 2, x2 = -2
2. 2y² = 18
y² = 9
y1 = 3, y2 = -3
3. kt²=k
t²=1
t1=1, t2 =-1
4. 2a(16a²-1)=0
2a=0 или 16a²-1 = 0
a=0 16a²=1
a²=1/16
a= 1/4
a=0.25