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8x=10-8
8x=2 |:8
x=2/8 ( w ułamku)
(y-1)y=y²-1
y²-y=y²-1
y²-y-y²=-1
-y=-1
y=1
(a+3)²=a²-5
a²+3²=a²-5
a²-a²=-5-9
o=-14
układ równań nieokreślony
8x+2=10
8x = 10 - 2
8x = 8
x = 8 : 8
x = 1
(y-1)y=y²-1
y² - y = y² -1
y² -y - y² = -1
-y = -1
y = (-1) : (-1)
y = 1
(a+3)²=a²-5
a² + 6a + 9 = a² - 5
a² + 6a - a² = -5 -9
6a = -14
a = (-14) :6
a =( - 7/3)
a = -2⅓
8x=10-2
8x=8
x=1