Which of the following is the correct substitution into the quadratic formula?
3x2 + 4x +5=0

Answer:
answer is D
x = -4±√4^2 - 4(3)(5)
2(3)
Step-by-step explanation:
ax^2 + bx + c = 0
3x^2 + 4x + 5 = 0
x = -b ±√b^2 - 4ac
2(a)
x = -4±√4^2 - 4(3)(5)
2(3)
Answer:
The last choice is correct.
Step-by-step explanation:
Use only the coefficients and the constant, a, b & c. not the variable x.