<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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1
1)x^2-25
2)36a^2+49b^2
3)m^2-3m+3m-9=m^2-9
4)64m^2-32mn+32mn-16n^2
2
1)(10-x)^2
c^2-64
3
4m^2+36n^2-10mn-5mn
4
(-2,5-9)-(-2,5-2)(-2,5+2)=-2,5-9-6,25+5-5+4=13,75