Упростим:
(2c + 3)^2 - 12c
(2c + 3)(2c + 3) - 12cExpanding the square:
(4c^2 + 6c + 6c + 9) - 12cCombining like terms:
4c^2 + 12c + 9 - 12cSimplifying further:
4c^2 + 0c + 9Final simplified expression:
4c^2 + 9
Упростим:
(2c + 3)^2 - 12c
(2c + 3)(2c + 3) - 12c
Expanding the square:
(4c^2 + 6c + 6c + 9) - 12c
Combining like terms:
4c^2 + 12c + 9 - 12c
Simplifying further:
4c^2 + 0c + 9
Final simplified expression:
4c^2 + 9