2²×-¹ -5• 2×+¹ +32:0

(y/z)²-9>0

(y²-9z²)/z²>0

(y+3z)(y-3z)/z²>0

(3z+y)(3z-y)/z²< 0☜

{3x+6+x-2}{3x+6-x+2} /(x+2)² < 0

4(x+1)2(x+4)/(x+2)²<0

-ve | -ve | - ve | +ve

.....-4 ......-2........-1...........

~~~~(-4,-2)∪(-2,-1)~~~~SOLUTION ■