Объяснение:
1) a) -2x^2 +50 =0
-2x^2 = -50
x^2= 25
x= 5
б) -3x^2 + 4 = 0
-3x^2= -4
x^2= 4/3
x=
2)
x^2 - 2( x-1) = 26
x^2 -2x + 2 = 26
x^2 - 2x + 2 - 26 = 0
x^2 + 4x - 6x - 24= 0
x( x+4) - 6(x+4) = 0
(x+4)( x-6)=0
x=-4
x=6
y= -4 - 1 = -5
y= 6 -1 = 5
Объяснение:
1) a) -2x^2 +50 =0
-2x^2 = -50
x^2= 25
x= 5
б) -3x^2 + 4 = 0
-3x^2= -4
x^2= 4/3
x=
2)
x^2 - 2( x-1) = 26
x^2 -2x + 2 = 26
x^2 - 2x + 2 - 26 = 0
x^2 + 4x - 6x - 24= 0
x( x+4) - 6(x+4) = 0
(x+4)( x-6)=0
x=-4
x=6
y= -4 - 1 = -5
y= 6 -1 = 5