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(x-2)(2x+5)-3 ≤ 2(x-1)²+5

Răspuns :

2x²+5x-4x-10-3≤2(X²-2X+1)+5
2X²+5X-4X-10X-3≤2X²-4X+2+5
5X-10-3≤2+5
5X-13≤7
5X≤7+13
5X≤20
X≤4
am scris direct rezolvarea !! SUCCES