tolong ya kawan itu nomor 4.A ajaa

FungSi KompoSISI
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misal,

  a = 2x + 3
2x = a - 3
  x = (a - 3)/2


                                     (f o g) (x) =  f (g(x))
                           12x² + 32x + 26 =  f (2x + 3)
 12 ((a - 3)/2)² + 32 (a - 3)/2 + 26 = f (a)
    3a² - 18a + 27 + 16a - 48 + 26 = f (a)
                                  3a² - 2a + 5 = f (a)
                                  3x² - 2x + 5 = f (x)



Semoga Membantu!!!