Question

(2/7)^(3(2x-7))*12,25^(4x+1/2) больше либо равно 1

Answer 1

(2/7)^(6x-21)*(7/2)^(8x+1)>=1

(7/2)^(21-6x)*(7/2)^(8x+1)>=1

(7/2)^(21-6x+8x+1)>=1

(7/2)^(22+2x)>=1

22+2x>=0

x>=-11