Ответ: x∈(-4/3;2).
Объяснение:
[tex]6x -40 > (3x-8)(3x+8)\\\\6x-40 > 9x^2-64\\\\9x^2-6x-24 < 0\ |:3\\\\3x^2-2x-8 < 0\\\\3x^2-6x+4x-8 < 0\\\\3x(x-2)+4(x-2) < 0\\\\(x-2)(3x+4) < 0\\[/tex]
-∞__+__-4/3__-__2__+__+∞ ⇒
[tex]\displaystyle\\x\in(-\frac{4}{3};2).[/tex]
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Ответ: x∈(-4/3;2).
Объяснение:
[tex]6x -40 > (3x-8)(3x+8)\\\\6x-40 > 9x^2-64\\\\9x^2-6x-24 < 0\ |:3\\\\3x^2-2x-8 < 0\\\\3x^2-6x+4x-8 < 0\\\\3x(x-2)+4(x-2) < 0\\\\(x-2)(3x+4) < 0\\[/tex]
-∞__+__-4/3__-__2__+__+∞ ⇒
[tex]\displaystyle\\x\in(-\frac{4}{3};2).[/tex]