The quadratic expression is given as \( 7x^2 - 4x + 12 \).
In a standard quadratic expression of the form \( ax^2 + bx + c \):
- \( a \) is the coefficient of \( x^2 \),
- \( b \) is the coefficient of \( x \),
- \( c \) is the constant term.
For the expression \( 7x^2 - 4x + 12 \):
- \( a = 7 \)
- \( b = -4 \)
- \( c = 12 \)
Thus, the list of coefficients is \( (7, -4, 12) \).