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g(-5)=-5p+c = -27
g(3)=3p+c = 13
setelah dieleminasi, maka akan didapat
-8p= -40
p=5
3p+c =13
15+c=13
c= -2
g(8)=5.8-2 =38
2). f(x)=3x+8
f(-2)=3(-2)+8=2
f(-4)=3(-4)+8=-4
f(-2)+f(4)=2-4=-2
semoga membantu, kl boleh jadikan jawaban terbaik ya ^^
g (3) = 3p + c = 13
----------------------------------- -
-8p = -40
p = 5
3p + c = 13
3.5 + c = 13
c= 13 - 15
c= -2
fungsi g (x) = 5x -2
maka g (8) = 5.8 - 2
= 40-2
= 38
2. f (x) = 3x + 8
maka f(-2) = 3.-2 +8
= -6 + 8
= 2
f (4) = 3.4 + 8
=12 +8
= 20
maka f(-2)+f(4) = 2 + 20 =22