<span>-10*(0,7-3b)+14b+13=-7+30b+14b=-7+44b=44b-7
b=-1/4
-11-7=-18</span>
8/х - 4/5х при х = 1,6 4/5 = 0,8 - в десятичных дробях
<span>4^sin(x)+2^(5-2sin(x))=18 </span>
<span>4^sin(x)+2^5/2^2sin(x)=18 </span>
<span>t+2^5/t=18 </span>
<span>t^2-18t+32=0 </span>
<span>t1=2 t2=16 </span>
<span>4^sin(x)=2 x=(-1)^k*п/6+пк к Є Z </span>
<span>4^sin(x)=4^2 </span>
<span>Sin(x)=2 </span>
<span>Ответ: x=(-1)^k*п/6+пк к Є Z</span>
<span>!</span>
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