f(x)=xkuadrat-5x+8 Tentukan: F(10) F(x)=22

Question

Matematika Diposting : 2017-11-07 Diupdate : 2019-03-27 irenecy

Pertanyaan

f(x)=xkuadrat-5x+8
Tentukan:
F(10)
F(x)=22

Answer 1

f(x) = x'' - 5x + 8
f(10) = 10'' -5.10 + 8 = 100-50+8 = 58
f(x) = 22
x'' -5x +8 = 22
x'' -5x -14 =0
(x -7 ) ( x +2) =0
x1 = 7
x2 = -2