Question

Rumus fungsi : x = x pangkat 2 -1 . kemudian nilai fungsi untuk x =-4 dan x = 3 adalah??

Answer 1

(-4) = - 4 kuadrat - 1
= 16 - 1
= 15

(3) = 3 kuadrat - 1
= 9 - 1
= 8

Answer 2

F : x → x² - 1
f(x) = x² - 1
f(x) = (x + 1)(x - 1)

f(- 4) = (-4 + 1)( - 4 - 1)
= (-3)(-5)
= 15

f(3) = (3+1)(3-1)
= (4)(2)
= 8

smgmbntu ya kalau boleh jadikan terbaik ya ^_^