Ответ:
Объяснение:
A) x^2 + 4x - 5 >= 0
(x+5)(x-1) >= 0
6
B) x^2 + 6x + 9 <= 0
(x+3)^2 <= 0
3
C) 4x^2 - x + 9 < 0
D = 1^2 - 4*4*9 = 1 - 144 = -143 < 0
1
D) x^2 - x + 1/4 >= 0
D = 1^2 - 4*1*1/4 = 1 - 1 = 0
2
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
Объяснение:
A) x^2 + 4x - 5 >= 0
(x+5)(x-1) >= 0
6
B) x^2 + 6x + 9 <= 0
(x+3)^2 <= 0
3
C) 4x^2 - x + 9 < 0
D = 1^2 - 4*4*9 = 1 - 144 = -143 < 0
1
D) x^2 - x + 1/4 >= 0
D = 1^2 - 4*1*1/4 = 1 - 1 = 0
2