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marisennfg
@marisennfg
July 2022
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помогите пожалуйста решить уравнения
1) х+7/3 - х/5 = 8
2) 7х^2 - 4х - 24 = -х^2
3) (х+1)^2 = (x-2)^2
4) (х+7)^2 + (x-5)^2 = 2x^2
буду безмерно благодарна
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xxxeol
Verified answer
1)
4/5х = 8 -7/3 = 5 2/3
х = 1 2/15 - ОТВЕТ
2)
8х² - 7х -24 = 0 Дискриминант -D=784 и √784 = 28 и корни х1= -1,5 и
х2 = 2.- ОТВЕТ
3)
х² +2х +1 - х² -+ 4х - 4 =0
6х = 3
х = 2 - ОТВЕТ
4)
х²
+14х+49
+ х²
-10х+25 =
2х²
4х = - 54
х = - 13,5 - ОТВЕТ
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Answers & Comments
Verified answer
1)4/5х = 8 -7/3 = 5 2/3
х = 1 2/15 - ОТВЕТ
2)
8х² - 7х -24 = 0 Дискриминант -D=784 и √784 = 28 и корни х1= -1,5 и
х2 = 2.- ОТВЕТ
3)
х² +2х +1 - х² -+ 4х - 4 =0
6х = 3
х = 2 - ОТВЕТ
4)
х² +14х+49 + х²-10х+25 = 2х²
4х = - 54
х = - 13,5 - ОТВЕТ