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Verified answer
Karena x+2 merupakan faktor dari f(x) artinyaf(-2) =0
f(-2) = -5(-2)^5 +a(-2)³ + (-2)²-4=0
= 160 -8a =0
8a= 160
a=20
Verified answer
Jawabx + 2 =0
x = - 2
f(-2) =0
-5(-2)⁵ + a(-2)³ + (-2)² - 4= 0
160 - 8a + 4 - 4 = 0
-8a = -160
a = 20