АЛГЕБРА ОЧЕНЬ СРОЧНО!!!...

August 2021 1 18 Report

АЛГЕБРА ОЧЕНЬ СРОЧНО!!!

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LazyJoe 1)
$\left \{ {log_{3}(x+y)=2} \atop {9^{log_{3}\sqrt{x-y}}=5}} \right. \\
 \left \{ x+y=9} \atop {3^{2log_{3}\sqrt{x-y}}=5}} \right. \\
\left \{ x=9-y} \atop {3^{log_{3}(x-y)}=5}} \right. \\
\left \{ x=9-y} \atop {x-y=5}} \right. \\
\left \{ x=9-y} \atop {x=5+y}} \right. \\
9-y=5+y \\ 
2y=4 \\
y=2, x=7$
2)
$f(x)=x^{log_{2}x+2} \\
x^{log_{2}x+2}=8 \\
x^{ log_{2}4x=8 \\
$
Я еще попытаюсь доделать второе

2 votes Thanks 1

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