<span>(1/3)^х = 27</span>
<span>x=2/1:1/3</span>
<span>x=27*3=81</span>
<span>x=81</span>
Х(2+у) + 7 (у+2)= (у+2) (х+7)
Решение:
а) (36^sinx)^-cosx=6^sinx
6^-2sinxcosx=6^sinx
-2sinxcosx = sinx -2sinxcosx - sinx = 0 sinx(-2cosx - 1) =0
sinx=0 -2cosx-1=0
x=пn cosx = -1/2
x= 2п/3+2пn x=-2п/3+2пn
б) -10п/3; -3п; -8п/3; -2п
=x^2-8x+16-x^2-2x-x-5=-11x+11