12*х^6*у^3.
В пустых квадратах напишите 6 и 3.
5x-3/3=3-10x/11
11(5x-3)=3(3-10x)
55x-33=9-30x
55x+30x=9+33
85x=42
x=42/85
Cos(24)+cos(48) = 2cos(36)cos(12)
cos(84)+cos(12) = 2cos(48)cos(36)
cos(24)+cos(48)-(cos(84)+cos(12) ) = 2cos(36)(cos(12)-cos(48)) = -4cos(36)sin(30)sin(-18) = 2cos(36)sin(18) = 2cos(36)sin(36)sin(18)/sin(36) = sin(72)sin(18)/sin(36) = sin(72)cos(72)/sin(36) = (1/2)*sin(144)/sin(36) = 1/2
<span>(3a^8c^3)^3 ⋅ (8a^3c^3)^0 / (27a^3c^3)^2=27a^24c^9*1/729a^6c^6=
=1/27*a^18c^3</span>