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rubischeva125
@rubischeva125
September 2021
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НОМЕР 7 И 12!ПОМОГИТЕ!
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AlbuRin
Verified answer
(a^2 - 9) / (6a^2 - 18a) = (a - 3) * (a + 3) /6a(a - 3) = (a + 3) / 6a
При а = -0,3 (а + 3)/ 6а = (-0,3 + 3)/6*(-0,3) = 2,7 / (-1,8) = -1,5
-12 + 3x
> 0 3x > 12 x> 12 / 3 x > 4
9 - 4x > -3 4x < 9 + 3 x < 12 / 4 x < 3
1) Система не имеет решений
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Answers & Comments
Verified answer
(a^2 - 9) / (6a^2 - 18a) = (a - 3) * (a + 3) /6a(a - 3) = (a + 3) / 6aПри а = -0,3 (а + 3)/ 6а = (-0,3 + 3)/6*(-0,3) = 2,7 / (-1,8) = -1,5
-12 + 3x > 0 3x > 12 x> 12 / 3 x > 4
9 - 4x > -3 4x < 9 + 3 x < 12 / 4 x < 3
1) Система не имеет решений