1. Rozwiąż nierówność
2. Rozwiąż równanie
Prosze o pomoc ;)
1/ (x+5)/(x+7)>-2 | ·x+7
x+5>-2(x+7)
x+5>-2x-14
x+2x>-5-14
3x>-19
x>-19/3
x> -6 1/3
2/ (2x+5)/(x²-1)=1/(x+1)
(2x+5)(x+1)=x²-1
(2x+5)(x+1)=(x+1)(x-1) |:x+1
2x+5=x-1
2x-x=-5-1
x=-6
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1/ (x+5)/(x+7)>-2 | ·x+7
x+5>-2(x+7)
x+5>-2x-14
x+2x>-5-14
3x>-19
x>-19/3
x> -6 1/3
2/ (2x+5)/(x²-1)=1/(x+1)
(2x+5)(x+1)=x²-1
(2x+5)(x+1)=(x+1)(x-1) |:x+1
2x+5=x-1
2x-x=-5-1
x=-6