Question

помогите решить уравнение пожалуйста
9y²-9=0，
2x²+6x=0,
2x²=0

Answer 1

9y^2 - 9 = 0
9y^2 = 9
y^2 = 1
y = ± 1

2x^2 + 6x = 0  /:2
x^2 + 3x = 0
x (x + 3) = 0
x = 0;
x + 3 = 0 ==> x = - 3

2x^2 = 0
x^2 = 0
x = 0

Answer 2

9у^2-9=0
9у^2=9
у^2=1
х1=-1,
Х2=1

2х^2+6х=0
2х(х+3)=0
2х=0,х+3=0
Х=0,х=-3

2х^2=0
Х=0

Answer 3

1)х=0,3х-9=0

Answer 4

2)х-2=0,х=2, х+1=0,х=-1