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Если уравнение такое -7x+py-2p=0, то
-7*(-2)+p*3-2p=0
p=-14
<span>100=10^2
10=10^1;
1=10^0;
0,1=10^-1;
0,01=10^-2;
0,001=10^-3;
0,0001=10^-4;
0,00001=10^-5;
0,000001=10^-6;</span>
Запись в стандартном виде :
![8.6* 10^{3} \\ \\ 7.8* 10^{-3}](https://tex.z-dn.net/?f=8.6%2A+10%5E%7B3%7D++%5C%5C++%5C%5C+7.8%2A+10%5E%7B-3%7D+)
√72-√288 sin в квадрате 15П/8√72 -√(288) *sin²15π/8 = √72(1 - 2sin²(2π -π/8)) =6√2(1 -2sin²π/8) =
(6√2)*cos2*π/8= (6√2)*cosπ/4 =(6√2)*(1/√2) = 6.