Question

Ada yang bisa bantu???​

Answer 1

Misalkan:

x1+x2 = -b/a

x1.x2 = c/a

x1-x2 = VD/a

(x1+x2).(x1-x2)

= x1^2+x2^2

Bentuk Umum Persamaan Kuadrat:

a. x1+x2 = 3

x1.x2 = 1

1/x1 + 1/x2 = 3

x1^2+x2^2 = 3V5

b. x1+x2 = -1

x1.x2 = -1

1/x1 + 1/x2 = 1

x1^2+x2^2 = -V5

c. x1+x2 = -3

x1.x2 = -2

1/x1 + 1/x2 = 3/2

x1^2+x2^2 = -3V17

d. x1+x2 = 5

x1.x2 = -7

1/x1 + 1/x2 = -5/7

x1^2+x2^2 = 5V53

e. x1+x2 = 4

x1.x2 = 3/2

1/x1 + 1/x2 = 8/3

x1^2+x2^2 = 2V40