Answer:
-43
Step-by-step explanation:
[tex] - k {}^{2} - (2k - 7n) + 3n[/tex]
[tex] - ( - 3)^{2} - (2( - 3) - 7( - 4)) + 3( - 4)[/tex]
[tex] - 9 - ( - 6 + 28) - 12[/tex]
[tex] - 9 - 22 - 12[/tex]
[tex] = -43[/tex]
