Question

Tolong jawabkan yahh dengan caranyaa yg benar


No 13 ,15 dan 16 sajaa okee....

Answer 1

13.
g(x)=x²-3x-4
f(x)=x-5
fog
= (x-5)²-3x-4
=x²-10x+25-3(x-5)-4
=x²-10x-3x+25+15-4
=x²-13x+36

14.
((3x+2)+3)/(2(3x+2)-1)
=(3x+5)/6x+3
jika x=-1
=(3(-1)+5)/(6(-1)+3)
=-2/3

15.
4=3(2x²+1)-5
4=6x²+3-5
0=6x²-6
x1=1
x2=-1

16.
g(x-2)=2x-7, g(x)= 2x-11
hog (x)=h(g(x))
4x²+44x+1=h(g(x))
h(g(x))=4x²+44x+1
h(2x-11)=2x(2x+11)+1
h(x)=2x²-220
h(10)=200-220
h(10)=-20

sekian ;)