Answer:
[tex]3A + B =2m^2+6m+3[/tex]
Step-by-step explanation:
Given
[tex]A = 2m + 1[/tex]
[tex]B = 2m^2[/tex]
Required
Find [tex]3A + B[/tex]
[tex]3A + B =3(A) + B[/tex]
Substitute values for A and B
[tex]3A + B =3(2m+1) + 2m^2[/tex]
Open bracket
[tex]3A + B =6m+3 + 2m^2[/tex]
Reorder
[tex]3A + B =2m^2+6m+3[/tex]
