(1)3x/(x+2)>x+6;(2)x+1+5x^2/(x+2)≥1/(1-x);(3)在数轴上,点A=1,B=-2,P=k,若|PA|=5,则k=____,若|PA|+|PB|=5,则k=____,若|PA|+|PB|

问题描述:

(1)3x/(x+2)>x+6;(2)x+1+5x^2/(x+2)≥1/(1-x);
(3)在数轴上,点A=1,B=-2,P=k,若|PA|=5,则k=____,若|PA|+|PB|=5,则k=____,若|PA|+|PB|

(1)x(2)x(3)6或-4 -3或2 (-3,2)
(4)x>2
(5)x5

(1)x