rozwiaz trzeba ze wzoro skroconego mnozenia 3-(2x-5)(5+2x)<1-(2x-3) do kwdratu
3-(2x-5)(5+2x)<1-(2x-3)²
3 - (2x-5)(2x+5) < 1 - 4x² + 12x - 9
3 - (4x² - 25) < -4x² + 12x - 8
3 - 4x² + 25 < -4x² + 12x - 8
-12x < -36 /:(-12)
x > 3
x∈ ( 3 , + ∞ )
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3-(2x-5)(5+2x)<1-(2x-3)²
3 - (2x-5)(2x+5) < 1 - 4x² + 12x - 9
3 - (4x² - 25) < -4x² + 12x - 8
3 - 4x² + 25 < -4x² + 12x - 8
-12x < -36 /:(-12)
x > 3
x∈ ( 3 , + ∞ )