5(x -1)2 – 2(x + 3)2 ≥ 3(x + 2)2 – 2(6x – 1)
(5x-5)2-(2x+6)2 ≥ (3x+6)2-12x-2
10x-10-4x-12 ≥ 6x+12-12x+2
10x-4x-6x+12x ≥ 12+2+10+12
12x ≥ 36 |:12
x ≥ 3
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5(x -1)2 – 2(x + 3)2 ≥ 3(x + 2)2 – 2(6x – 1)
(5x-5)2-(2x+6)2 ≥ (3x+6)2-12x-2
10x-10-4x-12 ≥ 6x+12-12x+2
10x-4x-6x+12x ≥ 12+2+10+12
12x ≥ 36 |:12
x ≥ 3