Odczytaj z wykresu rozwiązanie równań: 7/x = x+6.
7/x=x+6/·x
7=x²+6x
-x²-6x+7=0/·(-1)
x²+6x-7=0
a=1, b=6, c=-7
Δ=36-4·1·(-7)
Δ=64
√Δ=8
x₁==-7
x₂=
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7/x=x+6/·x
7=x²+6x
-x²-6x+7=0/·(-1)
x²+6x-7=0
a=1, b=6, c=-7
Δ=36-4·1·(-7)
Δ=64
√Δ=8
x₁==-7
x₂=