<span><u><em>Задание 1.</em></u>
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![(0,1n^{3}c^{7})^{4};](https://tex.z-dn.net/?f=%280%2C1n%5E%7B3%7Dc%5E%7B7%7D%29%5E%7B4%7D%3B)
![0.0001 a^{12} b^{28} .](https://tex.z-dn.net/?f=0.0001+a%5E%7B12%7D++b%5E%7B28%7D+.)
<span><u><em>Задание 2.
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![0,01n^4y^{10} = (0,1n^{2}y^{5})^{2}.](https://tex.z-dn.net/?f=0%2C01n%5E4y%5E%7B10%7D+%3D+%280%2C1n%5E%7B2%7Dy%5E%7B5%7D%29%5E%7B2%7D.)
100(87²-13)/(91²-34*91+17²)=(87-13)(87+13)/(91²-2*17*91+17²)=
=74*100/(91-17)²=7400/74²=100/74=50/37.
(x²-4x)²-(x²-4x+4)-16≤0
(x²-4x)²-(x²-4x)-20≤0
x²-4a=a
a²-a-20≤0
a1+a2=1 U a1*a2=-20
a1=-4 u a2=5
-4≤a≤5
{x²-4x≥-4 (1)
{x²-4x≤5 (2)
(1) x²-4x+4≥0
(x-2)²≥0⇒x-любое
(2) x²-4x-5≤0
x1+x2=4 u x1*x2=-5⇒x1=-1 U x2=5
x∈[-1;5]