1/2sin6x=-√3/4
sin6x=-√3/2
6x=(-1)^n+1*π/3+πn
x=(-1)^n+1*π/18+πn/6
А) 2х=68
х=34
б)2х=62
х=31
в)9х=77
х=77/9 или 8ц 5/9
1-5•(-4^2) =1-5•16=1-80=-79
=(х^5-x²) +(x²-1)=x²(x³-1)+(x²-1)=x²(x-1)(x²+x+1)+(x-1)(x+1)=
=(x-1)(x^4+x³+x²+x+1)
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