Respuesta :
Answer:
[tex]11xy+4x^{2} t[/tex]
Step-by-step explanation:
1. Collect Like Terms
[tex](7xy+4xy)+(-x^{2} t+5x^{2} t)\\[/tex]
2. Simplify.
[tex]11xy+4x^{2} t[/tex]
11xy+4tx^2. You combine 7xy and 4xy and get 11xy, then add 5x^2t and -x^2t and get 4tx^2