3z^2-27=0 16-4x^2=0 1-9z^2
3z^=27 4x^2=16 9z^2=1
z^2=9 x^2=4 z^2=1\9
z=3 x=2 z=1\3
z=-3 x=-2 z=-1\3
1) 3z^2-27=0
3 z^2 = 27
z^2 = 9
z = 3
z = -3
ответ : { 3, -3}
2) 16-4x^2=0
4 (4 - x^2) = 0
4 - x^2 = 0
x = 2
x = -2
ответ : { 2, -2}
3) 1-9z^2=0
( 1- 3z) (1+3z ) = 0
1 - 3z = 0 или 1+3z = 0
- 3z= -1 3z = -1
z = 1/3 z = - 1/3
ответ : { 1/3 , - 1/3 }
3z^2-27=0 16-4x^2=0 1-9z^2
3z^=27 4x^2=16 9z^2=1
z^2=9 x^2=4 z^2=1\9
z=3 x=2 z=1\3
z=-3 x=-2 z=-1\3
1) 3z^2-27=0
3 z^2 = 27
z^2 = 9
z = 3
z = -3
ответ : { 3, -3}
2) 16-4x^2=0
4 (4 - x^2) = 0
4 - x^2 = 0
x = 2
x = -2
ответ : { 2, -2}
3) 1-9z^2=0
( 1- 3z) (1+3z ) = 0
1 - 3z = 0 или 1+3z = 0
- 3z= -1 3z = -1
z = 1/3 z = - 1/3
ответ : { 1/3 , - 1/3 }