Answer:
A
Step-by-step explanation:
Shift the bottom trinomial to where like terms match up where it looks like this.
2x²+5x+4
5x²+8x
To make it easier to understand add a placeholder +0 to the trinomial so everything matches up so it looks
like this.
2x²+5x+4
5x²+8x+0
Finally, add like terms and you should end up with this. 7x²+13x+4
