1) х(x+2) = 0x = 0 x + 2 = 0 x = -2
2) z (z-1,6) = 0
z=0 z -1,6=0
z=1,6
3) (y+2)(y-6) = 0
y^2 - 6y + 2y -12 = 0
y^2 - 4y - 12=0
y1 = 6 y2 = - 2
4) (x+1)(x+4) = 0
x^2 + 4x + x+4 = 0
x^2 +5x+4 =0
D = 5^2 -4*4 = 25-16=9D = 3x1= -5+3/2 = -2/2 = -1
x2 = -5-3/2 = -8/2 = -4
2.x=-4 .x=-1
3.z=0.z=1.6
4.y=-2.e=6
1) х(x+2) = 0
x = 0 x + 2 = 0
x = -2
2) z (z-1,6) = 0
z=0 z -1,6=0
z=1,6
3) (y+2)(y-6) = 0
y^2 - 6y + 2y -12 = 0
y^2 - 4y - 12=0
y1 = 6 y2 = - 2
4) (x+1)(x+4) = 0
x^2 + 4x + x+4 = 0
x^2 +5x+4 =0
D = 5^2 -4*4 = 25-16=9
D = 3
x1= -5+3/2 = -2/2 = -1
x2 = -5-3/2 = -8/2 = -4