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gaha233
@gaha233
September 2021
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Степени. 11 класс. 60б.
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PhysicalFace
1.
a) 0.7 + 3 = 3.7
b) 5√2^7 * 11^3 * 2^8 * 11^7 = 5√2^15 * 11^10 = 2^3 * 11^2 = 968
2.
a)
4 - 3x = 256;
-3x = 252;
x = 84.
Ответ: -84.
b)
x^2 - x - 44 = -32;
x^2 - x - 12 = 0;
D = 1 + 48 = 49 = 7^2 > 0;
x1 = (1 + 7)/2 = 4;
x2 = (1 - 7)/2 = -3;
Ответ: -3; 4.
3 votes
Thanks 1
gaha233
Да, все правильно, спасибо.Только там -84)
PhysicalFace
Эх, и правда)
вераника2008
Извини у меня не правильно
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Answers & Comments
a) 0.7 + 3 = 3.7
b) 5√2^7 * 11^3 * 2^8 * 11^7 = 5√2^15 * 11^10 = 2^3 * 11^2 = 968
2.
a)
4 - 3x = 256;
-3x = 252;
x = 84.
Ответ: -84.
b)
x^2 - x - 44 = -32;
x^2 - x - 12 = 0;
D = 1 + 48 = 49 = 7^2 > 0;
x1 = (1 + 7)/2 = 4;
x2 = (1 - 7)/2 = -3;
Ответ: -3; 4.