![x^{2} -3x-10<0](https://tex.z-dn.net/?f=x%5E%7B2%7D+-3x-10%3C0)
![x^{2} -3x-10=0](https://tex.z-dn.net/?f=x%5E%7B2%7D+-3x-10%3D0)
![x_{1} =-2](https://tex.z-dn.net/?f=x_%7B1%7D+%3D-2)
![x_{2} =5](https://tex.z-dn.net/?f=x_%7B2%7D+%3D5)
![(x+2)(x-5)<0](https://tex.z-dn.net/?f=%28x%2B2%29%28x-5%29%3C0)
Точки
и ![-5](https://tex.z-dn.net/?f=-5)
∈![(-5;2)](https://tex.z-dn.net/?f=%28-5%3B2%29)
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![x^{2} -25>0](https://tex.z-dn.net/?f=x%5E%7B2%7D+-25%3E0)
![(x-5)(x+5)>0](https://tex.z-dn.net/?f=%28x-5%29%28x%2B5%29%3E0)
Точки
и ![5](https://tex.z-dn.net/?f=5)
x∈(-∞;-5) ∪ (5;+∞)
вроде так
(x-4)(x-5)(x+5)
(x-5)(x+5)=x²-25
(x-4)(x²-25)=x·x² - 25·x - 4·x² + 4·25= x³-4x²-25x+100
Графики пересекаются в точке А(-2;1).
Ответ: x=-2
(3х-1)(2х+7) - (х+1)(6х-5)=7
6х² +21х -2х-7 -6х² +5х -6х +5=7
18х= 9
х= 9/18
х= 1/2
х=0,5
Ответ: х=0,5.
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