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6=x² + x /×x
x² + x - 6 = 0
Δ=1+24
x=-3 lub x=2
3/2x - 3 = 1
3/2x = 4
3 = 8x
x = 3/8
x-3/2x-1 > 1 /× 2x-1
x-3 > 2x-1
-2 > x
x ∈ (-∞ ; -2)
6/x = x-1
6=x²-x
x²-x-6=0
Δ=25
x₁=-2
x₂=3
2.
1/(x+2) - 2/(x-1) = 1
1 - (2x+4)/(x-1) = x+2
x-1 - 2x - 4 = x²+x-2
-x³-2x-3=0
Δ=4-12=-8 brak rowiązań
3.
3/2x - 3 = 1
3 =8x
x=3/8
4.
(x-3)/(2x-7)≥0
(x-3)(2x-7)≥0
2x²-7x-6x+21≥0
2x²-13x+21≥0
Δ=169-168=1
x₁=6
x₂=7
x∈<-∞,6> suma <7,∞>
5.
x-3/2x-1 >1
x-3>2x-1
-x>2
x<-2
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