<span> (u−2)(5u+1)(3u−5)
(5mu+u-10m-2)(3u-5)
15mu</span>²-25mu+3u²-5u-30mu+50m-6u+10
15mu²-55mu+3u²-11u+50m+10
24.892:5.08+33.7х6.6=-6,7
Разделим на√2:
1/√2 · sin3x - 1/√2 · cos3x = sinx
sin(3x - π/4) = sinx
sin(3x - π/4) - sinx = 0
2cos(2x - π/8) · sin(x - π/8) = 0
cos(2x - π/8) = 0 sin(x - π/8) = 0
2x - π/8 = π/2 + πn x - π/8 = πk
2x = 5π/8 + πn x = π/8 + πk
x = 5π/16 + πn/2