Rozwiąz równanie : x (do potegi 2) - 3x (do potęgi 2) +2=0
x²-3x²+2=0
-2x²+2=0
2=2x²
1=x²
1=|x|
x=1 lub x=-1
-2x²+2=0/:(-2)
x²-1=0
(x+1)(x-1)=0
x+1=0 v x-1=0
x=-1 v x=1
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x²-3x²+2=0
-2x²+2=0
2=2x²
1=x²
1=|x|
x=1 lub x=-1
x²-3x²+2=0
-2x²+2=0/:(-2)
x²-1=0
(x+1)(x-1)=0
x+1=0 v x-1=0
x=-1 v x=1