[tex] \\ \\ [/tex]
f(x) = 1x⁰ + 2x² + 3x³ + 4x - 9x² + 2
f(2) + f(1) =
f(3) + f(4) =
f(5) =
[tex] \\ \\ [/tex]
1 soal 5+ pts
2 soal 10+ pts
3 soal 15+ pts
4 soal 20+ pts
5 soal 25+ pts
[tex] \\ \\ [/tex]
yg pts gk usah di jawab:v :-: hehe
f(x) = 1x⁰ + 2x² + 3x³ + 4x - 9x² + 2
f(x) = 1•1 + 2x² + 3x³ + 4x - 9x² + 2
f(x) = 1 + 2x² + 3x³ + 4x - 9x² + 2
f(x) = 3x³ + 2x² - 9x² + 4x + 1 + 2
f(x) = 3x³ - 7x² + 4x + 3
f(2) + f(1)
= [3•(2)³ - 7•(2)² + 4•2 + 3] + [3•(1)³ - 7•(1)² + 4•(1) + 3]
= [3•8 - 7•4 + 8 + 3] + [3•1 - 7•1 + 4 + 3]
= [24 - 28 + 8 + 3] + [3 - 7 + 4 + 3]
= 7 + 3
= 10
f(3) + f(4)
= [3•(3)³ - 7•(3)² + 4•7 + 3] + [3•(4)³ - 7•(4)² + 4•4 + 3]
= [3•27 - 7•9 + 28 + 3] + [3•64 - 7•16 + 16 + 3]
= [81 - 63 + 28 + 3] + [192 - 112 + 16 + 3]
= 49 + 99
= 148
f(5) = 3•(5)³ - 7•(5)² + 4•5 + 3
f(5) = 3•125 - 7•25 + 20 + 3
f(5) = 375 - 175 + 20 + 3
f(5) = 223
[answer.2.content]
