Sin100+sin20= 2.sin60.cos40, sin50=cos40
2.sin60.cos40/cos40=2.sin60= 2.(V3/2)=V3
((sin100+sin20)/sin50)ˇ2= (V3)ˇ2=3
Log4(x+y)=2*Log4(4)
Log4(x+y)=Log4(16)
x+y=16
Log3x+Log3y=2+Log37
Log3(xy)=Log3(9)+Log3(7)
Log3(xy)=Log3(63)
xy=63
x+y=16 x=16-y
xy=63 (16-y)y=63
-y²+16y-63=0
y²-16y+63=0
<span>D<0⇒ решений нет</span>
0.6x+2-1.2x-2
-0.6x
x=0
Наверное так
Будет 2/5 решения длинное
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