rozwiąż
(x-1)do kwadratu + 8 >lub równe 2x-1/3+(x-2)(x+2)
(x-1)² + 8 ≥ 2x-⅓+(x-2)(x+2)
x²-2x+1+8 ≥ 2x-⅓+x²-4
x²-2x-2x-x² ≥ -⅓-4-9
-4x ≥ -13⅓ /÷(-4)
x≤3⅓
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(x-1)² + 8 ≥ 2x-⅓+(x-2)(x+2)
x²-2x+1+8 ≥ 2x-⅓+x²-4
x²-2x-2x-x² ≥ -⅓-4-9
-4x ≥ -13⅓ /÷(-4)
x≤3⅓