Question

!100БАЛлов! 6.17 номер 1 и 3.На фото

Answer 1

Ответ:

1)

2 (2 x + 3) = 5 (2 x + 3)

(4 x + 6) = 5 (2 x + 3)

4 x + 6 = (10 x + 15)

(4 x - 10 x) + 6 = (10 x - 10 x) + 15

4 x - 10 x = -6 x

-6 x + 6 = (10 x - 10 x) + 15

10 x - 10 x = 0

(6 - 6) - 6 x = 15 - 6

6 - 6 = 0

-6 x = 15 - 6

15 - 6 = 9

-6 x = 9

2)

2 x - 3 = 5 (2 x - 3)^2

-2 (2 x - 3) (5 x - 8) = 0

(2 x - 3) (5 x - 8) = 0

2 x - 3 = 0 або 5 x - 8 = 0

2 x = 3 або 5 x - 8 = 0

x = 3/2 або 5 x - 8 = 0

x = 3/2 або 5 x = 8

x = 3/2 або x = 8/5

Answer 2

Подробное решение каждого уравнения на фото