Tolong di bantuh jawab kak no 7

Misal :
F(x) : x^2 - 4x + 3 hasilnya H(x) dan sisa ax + b
F(x) = (x^2 - 4x + 3) H(x) + ax + b
F(x) = (x - 1)(x - 3) H(x) + ax + b
F(1) = (1 - 1)(1 - 3) H(1) + a(1) + b
=> 4 = a + b
F(3) = (3 - 1)(3 - 3) H(3) + a(3) + b
=> 16 = 3a + b

..a + b = 4
3a + b = 16
------------------ -
-2a = - 12
a = -12/-2
a = 6

a + b = 4
6 + b = 4
b = 4 - 6
b = -2

sisa = ax + b
sisa = 6x - 2

jadi sisa pembagiannya adalah 6x - 2

Bab Polinomial
Matematika SMA Kelas X

f(x) = ax +b

f(1) =   a + b =   4
f(3) = 3a + b = 16
        ----------------- -
              -2a = -12
                 a = 6 

a + b = 4
6 + b = 4
b = 4 - 6
b = -2

f(x) = 6x - 2
jadi, sisanya 6x - 2

jawabannya B