Question

(12/15)^(5x+1)>(225/144)^x

Неравенство

Answer 1

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Answer 2

$(frac{12}{15})^{5x+1}>(frac{225}{144})^x;\\(frac{12}{15})^{5x+1}>(frac{12}{15})^{-2x};\\(0<frac{12}{15}<1);\\5x+1<-2x;5x+2x<-1;7x<-1;\\x<-frac{1}{7}$

 

ответ: x є $(-infty;-frac{1}{7})$