Решите неравенство с рисунком -5x^2+45>0
=================================
-5x^2+45>0 /:5
-x^2+9>0
x^2-9<0
(x-3)(x+3)<0
-3<x<3
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
=================================
Verified answer
-5x^2+45>0 /:5
-x^2+9>0
x^2-9<0
(x-3)(x+3)<0
-3<x<3