Khea2240idn
Answered

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If f (x) = -2x² + 3x - 11. Find f (3).​

Sagot :

Answer:
f(3) = -20

Step-by-step explanation:

f(3) = -2(3)² + 3(3) - 11

f(3) = -2(3)² + 3(3) - 11

f(3) = -18 + 9 - 11

f(3) = -20

RainyReverieidn

The answer is f(3) = -20.

We're asked to evaluate the function [tex]\sf f(x)=-2x^2+3x-11[/tex] for f(3), or when the value of x is 3.

Substitute 3 for x:

[tex]\sf f(3)=-2(3)^2+3(3)-11[/tex]

[tex]\sf f(3)=-2(9)+9-11[/tex]

[tex]\sf f(3)=-18+9-11[/tex]

[tex]\sf f(3)=-9-11[/tex]

[tex]\sf f(3)=-20[/tex]