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Polu01
@Polu01
July 2022
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ПОМОГИТЕ РЕШИТЬ УР-Е 7 класс!!!!
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oganesbagoyan
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ПОМОГИТЕ РЕШИТЬ УР-Е 7 класс!!!!
(x - 3)
² / 12 -(2x² +5) /4 +(1.25x² - 1) / 3 =2/3 ;
(x - 3)² / 12 -3(2x² +5) /12 +4
(1.25x² - 1) /12 =8/12 ;
( (x-3)² -(6x² +15) +5x² - 4 ) /12 =8 /12 ;
(x-3)² -(6x² +15) +5x² -
4
= 8 ;
x²
-2x*3 +3² -
6x²
-15 +
5x²
- 4 =8 ;
- 6x +9 -19 =8 ;
-6x -10 =8 ;
-6x = 10+8 ;
-6x =18 ;
x = 18/ (-6) ;
x = - 3.
ответ : -3
.
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Verified answer
ПОМОГИТЕ РЕШИТЬ УР-Е 7 класс!!!!(x - 3)² / 12 -(2x² +5) /4 +(1.25x² - 1) / 3 =2/3 ;
(x - 3)² / 12 -3(2x² +5) /12 +4(1.25x² - 1) /12 =8/12 ;
( (x-3)² -(6x² +15) +5x² - 4 ) /12 =8 /12 ;
(x-3)² -(6x² +15) +5x² - 4 = 8 ;
x² -2x*3 +3² - 6x² -15 +5x² - 4 =8 ;
- 6x +9 -19 =8 ;
-6x -10 =8 ;
-6x = 10+8 ;
-6x =18 ;
x = 18/ (-6) ;
x = - 3.
ответ : -3 .