andrea4099
andrea4099
10-07-2018
Mathematics
contestada
How did they get the -5? I got -3
Respuesta :
mkryukova19
mkryukova19
10-07-2018
f(x) = x² - 3x
g(x) = √x - 1
f(g(x))= (√x - 1)² - 3(√x - 1) = (√x - 1)(√x - 1 - 3) =(√x - 1)(√x - 4) =
= √x √x
-1*√x -4*√x
+4 = x -5√x +4
Answer: x -5√x +4
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