Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{3 {t}^{2} + 4t + 1}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{ (7 {t}^{2} + 4t + 1) - 4 {t}^{2} }[/tex]
Remove the unnecessary parentheses
[tex] \longrightarrow{ \sf{7 {t}^{2} + 4t + 1 - 4 {t}^{2} }}[/tex]
Collect like terms
[tex] \longrightarrow{ \sf{7 {t}^{2} - 4 {t}^{2} + 4t + 1}}[/tex]
[tex] \longrightarrow{ \sf{3 {t}^{2} + 4t + 1}}[/tex]
Hope I helped!
Best regards! :D
