Penjabaran dari (2m – 5)2​

Jawaban:

bab : perkalian aljabar

cara pangkatnya

= (2m – 5)²

= (2m – 5)(2m – 5)

= 4m² – 10m – 10m + 25

= 4m² – 20m + 25

cara biasa :

= (2m – 5)2

= (2m × 2) – (5 × 2)

= 4m – 10