6*(-корень 3)* корень 3/2*(-1)=9
см.влож
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1) cos105cos5 + sin105cos85 = cos105cos(90-85) + sin105cos85 =
=cos105sin85 + sin105cos85 = sin(105+85) = sin190
2)sin195cos5 + cos195sin185 = sin195cos5 + cos195sin(180+5) =
=sin195cos5 - cos195sin5 = sin(195-5) = sin190
sin190/sin190 = 1
M^6-64=(m³)²-(2³)²=(m³-2³)(m³+2³)=(m-2)(m²+2m+4)(m³+8)
вот...для тех, кому...<span>Халявно Разложить на множители m^6-64</span>