No.12 jawabnya C tolong kadih tau caranya

(x² – 16) / (x² + 8x + 16)
= [(x + 4)(x – 4)] / [(x + 4)(x + 4)]
= (x – 4) / (x + 4)

Jawaban C

X²-16/x²+8x+16 = (x+4)(x-4)/(x+4)(x+4)
= (x-4)/(x+4) "C"