1)24х+16больше21+14х 2)х²-8х+15больше или равно 0
24x+16>21+14x 24x-14x>21-16 10x>5 x>5/10 x>0.5 x∈(0.5;∞) х²-8х+15≥ 0 D=64-60=4 x₁=(8+2*15)/2=38/2=16 х₂=(8-2*15)/2=-22/2= - 11 x∈[-11;16]