agenttex5460
contestada

What is a simpler form of the expression?
(2n2 + 5n + 3)(4n – 5)

A. 8n3 + 10n2 – 13n – 15
B. 8n3 + 30n2 – 37n – 15
C. 8n3 – 10n2 + 37n – 15
D. 8n3 + 13n2 – 10n – 15

Respuesta :

texaschic101
(2n^2 + 5n + 3)(4n - 5) = 
4n(2n^2 + 5n + 3) - 5(2n^2 + 5n + 3) = 
8n^3 + 20n^2 + 12n - 10n^2 - 25n - 15 = 
8n^3 + 10n^2 - 13n - 15 <===