2в + в" + в"(5 - в)(5 + в) - 4в(в" - 3) = - в^2

Expand the terms:

2в + в" + 5в"(5 + в) + в"(5 - в) - 4вв" + 12в = - в^2

2в + в" + 25в + 5в^2 + 5в - в^2 - в^2 - 4вв" + 12в = - в^2

Combine like terms:

27в + в" + 5в^2 - в^2 - в^2 - 4вв" + 12в = - в^2

Simplify the equation:

27в + в" - в^2 - 4вв" + 12в = - в^2

Rearrange the terms to get the equation in the form of - в^2:

27в + в" - 4вв" + 12в + в^2 = - в^2

The equation in the form of - в^2 is:

27в + в" - 4вв" + 12в + в^2 = - в^2