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3 years ago

14

Please stop and help me

1 answer:

Vladimir79 [104]3 years ago

4 0

Answer:

f(9)= 141

Step-by-step explanation:

f(x)=- $x^{2}$ +5x+15

replace x's with 9
f(9)=-9^2+5(9)+15
solve
f(9)=141

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