1. Diketahui :
f(x) = x – 3
g(x) = 2x2 – 6x
b(x) = x2 – 9
m(x) = 2x2 – x – 15
f(x) + g(x) = … .
A 2x2 – 6x – 3
B 2x2 – x – 3
C 2x2 – 6x + 3
D 2x2 – 5x – 3
E 2x2 – 5x +3
f(x) = x – 3
g(x) = 2x2 – 6x
b(x) = x2 – 9
m(x) = 2x2 – x – 15
f(x) + g(x) = … .
A 2x2 – 6x – 3
B 2x2 – x – 3
C 2x2 – 6x + 3
D 2x2 – 5x – 3
E 2x2 – 5x +3
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Jawaban:
D
Penjelasan dengan langkah-langkah:
f(x) = x – 3
g(x) = 2x² – 6x
f(x) + g(x) = (x – 3) + (2x² – 6x)
f(x) + g(x) = 2x² – 6x + x – 3
f(x) + g(x) = 2x² – 5x – 3
diketahui
f(x) = x - 3
g(x) = 2x² - 6x
ditanya
f(x) + g(x)
jawab
f(x) + g(x)
x - 3 + 2x² - 6x
2x - 6x + x - 3
2x² - 5x - 3 ( E)