👤

Answer :

[tex] \: {y }^{2} + 5y - 7 \: subtract \: ({y}^{2} - 3y - 4n) \\ {y}^{2} + 5y - 7 - {y}^{2} + 3y + 4n \\ y {}^{2} - {y}^{2} + 5y + 3y + 4n - 7 \\ 8y + 4n - 7[/tex]

Answer: 8y + 4n - 7

Explanation: In the attachment.
View image Codywallace0014