F(x - 2) = x² - 4x + 4 Tentukan f(x) dan f(2) .... ?

f(x - 2) = x² - 4x + 4

misal :
x - 2 = a
x = a + 2

soal menjadi
f(a) = (a + 2)² - 4(a + 2) + 4
f(a) = a² + 4a + 4 - 4a - 8 + 4
f(a) = a²


f(2) = 2²
f(2) = 4

semoga berguna +_+