x(14+x) > -49
dokladnie rozpisac i napisac dziedzine
x(14+x)>-49
14x+x²>-49
x²+14x+49>0
Δ=b²-4ac
Δ=(14)²-4·1·49
Δ=196-196
Δ=0
x₁=-b
2a
X₁= -14
2·1
X₁=-7
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x(14+x)>-49
14x+x²>-49
x²+14x+49>0
Δ=b²-4ac
Δ=(14)²-4·1·49
Δ=196-196
Δ=0
x₁=-b
2a
X₁= -14
2·1
X₁=-7