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(x²-9)√x+2 /2x + 2 ≤0
maka
1. (x²-9)(√x+2) = 0
jadi
x²-9 = 0
(x+3)(x-3) = 0
x = -3 atau x = 3
dan √x+2 = 0
x+2 = 0
x = -2
2. 2x+2 = 0
2x = -2
x = -2/2
= -1
maka
--------l-------l---------------------l---
-3 -2 3
kita bila cek 0 maka hasilnya -9√2
lalu
------------------l------------------------
-1
kita cek 0 maka hasilnya 2...
jadi hasilnya :
+ -
-------------------l------------------------
-1
+ - + -
--------l-------l---------------------l----------
-3 -2 3
kita gabungkan jadi
+ - + - -
--------l-------l------l---------------l----------
-3 -2 -1 3
Mka HP nya yaitu {x l -2≤x<-1 atau x≤-3}