Respuesta :

f(-4), so 'x' is -4.

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

Simply the equation by following PEMDAS. Remember, a negative times a negative is a positive.

-4f = 16 + 12 + 9

Combine like terms.

-4f = 37

Divide by sides by -4.

f = -37 over 4.

37
 4
fichoh

The value of  f(-4) for f(x)= x²-3x+9 is 37

Given the function :

f(x)= x²-3x+9

Substitute - 4 for x in the equation :

f(-4) = (-4)² - 3(-4) + 9

f(-4) = 16 - (-12) + 9

f(-4) = 16 + 12 + 9

f(-4) = 37

Therefore, the value of f(x) when x = -4 is 37

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