x^2+8x+15<0
x²+8x+15<0
Δ=b²-4ac=64-60=4
√Δ=2
x₁= -8-2 / 2 = -10/2= -5
x₂= -8+2 / 2 = -6/2 = -3
x∈(-5,-3)
Zadanie z wykresem w załączniku :))
Pozdrawiam!!
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x²+8x+15<0
Δ=b²-4ac=64-60=4
√Δ=2
x₁= -8-2 / 2 = -10/2= -5
x₂= -8+2 / 2 = -6/2 = -3
x∈(-5,-3)
Zadanie z wykresem w załączniku :))
Pozdrawiam!!