log0.8 ( 3x^2 + x + 4 ) = log0.8 ( 17x+1 )
log4 ( x-4 ) +log4 ( x+4 ) = log4 ( 3x+2)
log3 (3x+5) + log3 (2x-5) = log3 ( 10x -16)
Помогите срочно решить!!!!!!