Question

Saya mau menanyakan no 4 dan 5 tolong di beritau cara dan jawabannyaa dengan benar ya

Answer 1

Tinggal diganti x = 0

f(x) = x² + px + q
5 = 0² + p * 0 + q

Answer 2

6. g(x) = x^2 + ax + b

g(2) = 2^2 + a(2) + b = 3

            4 + 2a + b = 3

             2a + b = -4 = 3 = -1

              2a + b = -1

g(5) = 18

g(5) = 5^2 + a(5) + b= 18

        = 25 + 5a + b = 18

         = 5a + b = -25 + 18 = -7

         = 5a + b = -7

2a + b = -1

5a + b = -7 -

-3a = 6

a = 6/3 = 2

2a + b = -1

2(2) + b = -1

4 + b = -1

b = -1 -4 = -5

g(x) = x^2 + ax + b

f(-3) = -3^2 + a(-3) + b

      = 9 - 6 - 4 = -1