The coefficients in a polynomial are the numerical values that are multiplying each variable term. In the given polynomial 7x^2 - 4x + 6, the coefficients are 7 (the coefficient of the x^2 term), -4 (the coefficient of the x term), and 6 (the constant coefficient). Therefore, the answer is option 3: 7, -4, 6.
The coefficients in the polynomial 7x^2 - 4x + 6 are 7, -4, and 6. Therefore, the correct answer is option 3, which is 7, -4, 6.
