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F(x) = -x³ + 3x² +9 x=4
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4 votes
F(x) = -x³ + 3x² +9
x=4

User Kyle Angelo Gonzales
by
4.5k points

1 Answer

2 votes


{ \pink{ \boxed{ \red{ \sf{f(4) = - 7}}}}}

Explanation:


{ \green{ \sf{f(x) = { - x}^(3) + 3 {x}^(2) + 9}}}


{ \green{ \sf{f(4) = ( { - 4})^(3) + 3( {4})^(2) + 9}}}


{ \green{ \sf{f(4) = - 64 + 3(16) + 9}}}


{ \green{ \sf{ f(4) = - 64 + 48 + 9}}}


{ \green{ \sf{f(4) = - 64 + 57}}}


{ \blue{ \boxed{ \orange{ \sf{f(4) = - 7}}}}}

User Laruiss
by
4.3k points
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