Dari fungsi f (x)=x^2+6x-16

Jawaban:

1. x² +6x -16

(x -2 )(x+8)

x1= 2 atau x2= -8

(2,0) dan (-8,0)

2.a = 1 b= 6 c= -16

-b/2a = -6/2.1 = -6/2 = -3

3.D/-4a = b²-4.a.c/-4.a = 6² -4.1.(-16) /-4.1=

36 + 64/-4 = 100/-4 = -25

4.(-3,-25)