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Today at 3:57 PM
Mathematics

Answered

f (x)=-4x^2+9 find f(-3)

Answer :

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Today at 4:02 PM

Answer:

[tex]f(x) = - 4 {x}^{2} + 9 \\ \\ f( - 3) = - 4 ({ - 3}^{2} ) + 9 \\ = -4 (9) + 9 \\ = - 36 + 9 \\ = - 27[/tex]

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Today at 4:02 PM

Answer:

-27

Step-by-step explanation:

to find f(-3) we must substitute x to -3 in the f(x)= -4x² +9

f(-3) = -4(-3)² +9

f(-3) = -4*9 +9

f(-3) = -36 +9

f(-3) = -27

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