Ответ:
4. x = 3.
5. x <=7
Пошаговое объяснение:
4. 3^x^2-6 = 27
3^x^2-6 = 3^3
x^2-6=3
x^2=9
x=3
5. 7^x <= 1/49
7^x <= 49^-1
7^x <= 7^2/1 - 1/1
7^x <= 7
x<=7
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Answers & Comments
Ответ:
4. x = 3.
5. x <=7
Пошаговое объяснение:
4. 3^x^2-6 = 27
3^x^2-6 = 3^3
x^2-6=3
x^2=9
x=3
5. 7^x <= 1/49
7^x <= 49^-1
7^x <= 7^2/1 - 1/1
7^x <= 7
x<=7