( m^2 + mn + 5n^2 ) - ( m^2 + 3mn + 3n^2 ) tolong dijawab yh besok dikumpulkan?

Question

Matematika Diposting : 2017-10-12 Diupdate : 2021-09-30 Dhifah09

Pertanyaan

( m^2 + mn + 5n^2 ) - ( m^2 + 3mn + 3n^2 )
tolong dijawab yh besok dikumpulkan?

Answer 1

(m² + mn + 5n² ) - (m² + 3mn + 3n²)
= (m² - m²) + (mn - 3mn) + (5n² - 3n²)
= 0 - 2mn + 2n²
= 2n² - 2mn
= 2n (n - m)