Rozwiąż nierówności:a)3xb)c)d)Proszę o szybką pomoc
3x²+2x-1>0
Δ=4+12=16
√Δ=4
x₁=-1
x₂=⅓
a>0
x ∈ (-∞; -1)U(⅓; +∞)
4x²-2x≤0
4x(x-½)≤0
x₁=0
x₂=½
x ∈ <0; ½>
3x²≤9
x²≤3
|x|≤√3
x ∈ <-√3; √3>
x²-4x+4>0
Δ=16-16=0
x₀=2
x ∈ R \ {2}
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3x²+2x-1>0
Δ=4+12=16
√Δ=4
x₁=-1
x₂=⅓
a>0
x ∈ (-∞; -1)U(⅓; +∞)
4x²-2x≤0
4x(x-½)≤0
x₁=0
x₂=½
a>0
x ∈ <0; ½>
3x²≤9
x²≤3
|x|≤√3
x ∈ <-√3; √3>
x²-4x+4>0
Δ=16-16=0
x₀=2
a>0
x ∈ R \ {2}