1)log2 (3x-10)=5
(loga (x)=y ⇔x=aˇy)
3x-10=2ˇ5
3x-10=32
3x=32+10
3x=42
x=14
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2)log4 176 - log4 2,75=log4 176/2,75=log4 64 =3 (4³=64)
Otvet: 3
(log x-log y = log x/y)
2sin(x + π/3) = -√3
sin(x + π/3) = -√3/2
x + π/3 = (-1)ⁿ+¹π/3 + πn, n∈Z
x = (-1)ⁿ+¹π/3 - π/3 + πn, n∈Z.
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