midnightally1
midnightally1
20-10-2020
Mathematics
contestada
f(x)= -x^2-9x+20 find f(9)
Respuesta :
ericatjd
ericatjd
20-10-2020
Answer:
-142
Step-by-step explanation:
Plug in 9 into x
-(9)^2-9(9)+20
-81-81+20
-162+20
-142
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