Question

Упростите выражение.

Answer 1

$-4(n+1)^2+9(n+1)+5=-4(n^2+2n+1)+9n+9+5=\\=-4n^2-8n-4+9n+14=-4n^2+n+10$

Answer 2

-4(n²+2n+1)+9n+9+5
-4n²-8n-4+9n+9+5
-4n²+n+10