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Астя07
@Астя07
August 2022
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Решить уравнения
1)log4 x^2=3
2)log4 x^3=6
3)lg x+lg x^2= lg(9x)
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Answers & Comments
hlopushinairina
1)loq₄x²=3;
x²=4³=64;
x₁=+√64=8;x₂=-√64=-8;
2)log₄x³=6;x³>0;x>0;
x³=4⁶;x=4²=16;
3)lgx+lgx²=lg9x;
lgx+lgx²=lg9+lgx;
lgx²=lg9;
x²=9;
x₁=+3;x₂=-3.
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Answers & Comments
x²=4³=64;
x₁=+√64=8;x₂=-√64=-8;
2)log₄x³=6;x³>0;x>0;
x³=4⁶;x=4²=16;
3)lgx+lgx²=lg9x;
lgx+lgx²=lg9+lgx;
lgx²=lg9;
x²=9;
x₁=+3;x₂=-3.