Odpowiedzi

2009-10-27T18:27:26+01:00
3x * 3x > 8x+3
9x > 8x + 3 | - 8x
x>3
2009-10-27T18:30:29+01:00
3x²>8x+3
3x²-8x-3>0
Δ=64+36=100
√Δ=10
x₁=(8+10):6=3
x₂=(8-10):6=-⅓

x∈(-∞;-⅓)u(3;+∞)
2009-10-27T18:47:37+01:00