Penjelasan dengan langkah-langkah:
f○g (x) = x² - 2x + 1
f○g (x) = f(g(x))
x²-2x+1 = f (5x+5)
misalkan
y= 5x+5
x = y-5
5
sehingga
f(x) = x²-10x + 25 - 2 (x-5) +1
25 5
f(x) = x² -10x+25 -10x + 50 + 25
f(x) = x² -20x + 100
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Penjelasan dengan langkah-langkah:
f○g (x) = x² - 2x + 1
f○g (x) = f(g(x))
x²-2x+1 = f (5x+5)
misalkan
y= 5x+5
x = y-5
5
sehingga
f(x) = x²-10x + 25 - 2 (x-5) +1
25 5
f(x) = x² -10x+25 -10x + 50 + 25
f(x) = x² -20x + 100