Berapa HP dari V(2-3x) >= x+5

Mella Camelia
Ada soal lagi nih, seru. Dicoba yak, hehe😀
V(2-3x) >= x+5
HP?

Hinata FaiqaAdzkiya
x jelas harus <=2/3
x+5<=0
x<=-5
hp1
x<=-5

2-3x>=x^2+10x+25
x^2 + 13 x + 23<=0
hp 2
(-13+V77)/2<= x <= (-13+V77)/2

jd HP
x<=-5 U (-13+V77)/2<= x <= (-13+V77)/2
x <= (-13+V77)/2
gitu ya?

Rahman Setiawan ‎
@mbak Hinata:yup.
syarat wajib pertama x<=2/3
.
Kmudian dibagi mjd 2 selang,
utk x<-5
dan -5<=x<2/3.
Utk x<-5 mk 2-3x>0 dan x+5<0 shg jelas V(2-3x)>x+5.
Hp1: x<-5.

Selang -5<=x<=2/3 diperoleh nilai (-13-V77)/2<= x <= (-13+V77)/2
Hp2: -5<= x <= (-13+V77)/2

hp1 U hp2 : x<= (-13+V77)/2.

 

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