Question

7. Jika f(x) = x -2, maka f(2x)+ 2f(x) adalah.. a.4x – 8
b.4x – 6
c.3x – 6
d.3x – 8
e.-6

tolong jawab yang benar ​

Answer 1

Penyelesaian

f(x) = x - 2

f(2x) = (2x) - 2

= 2x - 2

2f(x) = 2(x - 2)

= 2x - 4

f(2x) + 2f(x)

= (2x - 2) + (2x - 4)

= 4x - 6 (B)