4(1+x)>x-2
4+4x>x-2
4x-x>-2-4
3x>-6
x>-2
x∈(-2;∞)
(x²-25>0
(x-5)(x+5)>0
x=5 x=-5
+ _ +
-----------------(-5)-----------(5)-------------------
x∈(-∞;-5) U (5;∞)
3x²+7x-6<0<br>D=49+72=121
x1=(-7-11)/6=-3
x2=(-7+11)/6=2/3
+ _ +
--------------(-3)-------------(2/3)-------------------
x∈(-3;2/3)
-4<8-3x<5<br>-4-8<-3x<5-8<br>-12<-3x<-3<br>-3<3x<12<br>-3/3-1x∈(-1;4)