Question

Tolong yg bisa no 18 & 20 pake cara yg lengkap dan mudah dimengerti.Terima kasih

Answer 1

Smoga bnar dan dpt mmbantu

Answer 2

18. (m² - 16n²) / (8n - 2m)
= (m + 4n) (m - 4n) / -2(m - 4n)
= -1/2 (m + 4n)

20. (1 - m²) / (m² + m - 2)
= (1 + m) (1 - m) / (m + 2) (m - 1)
= - (1 + m) (m - 1) / (m + 2) (m - 1)
= - (1 + m) / (m + 2)