Răspunsuri

2014-05-01T23:20:35+03:00
4x-x²-4+x +4x+2x²+2+x  ≥x-x²+4-4x+x²+9+6x+x²-1
x²+10x-2 ≥ x²+3x+12
10x-2 ≥3x +12
10x-3x≥ 12+2
7x≥ 14
x ≥2
x∈(-α,2]
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