Question

Diketahui f(x - 5) = 2x - 2 . Nilai dari f(- 5) adalah.... A 12 B. 2 C. -2 D. -12

tolong di jwb bg gk usah pake rumus langsung jwaban​

Answer 1

Jawaban:f(x -5) = 2x -2misal : a = x - 5 => x = a + 5maka : f(a) = 2(a + 5) - 2f(a) = 2a + 10 - 2f(a) = 2a + 8jadi : f(-5) = 2(-5) + 8f(-5) = -10 + 8f(-5) = -2