nathalys081005 nathalys081005
  • 01-04-2020
  • Mathematics
contestada

What is the value of the discriminant of f ?
F(x) = 3x^2 + 12x + 5

Respuesta :

DeanR
DeanR DeanR
  • 01-04-2020

The usual discriminant is d=b²-4ac

d = (12)² - 4(3)(5) = 144 - 60 = 84

Answer: 84

When we have an even b like this we can get 1/4 of the usual discriminant with (b/2)²-ac = 6² - (3)(5) = 36 - 15 = 21.   That's a bit easier to calculate and usually just as good.

Answer Link
enguyen2613 enguyen2613
  • 01-04-2020
The answer is F(x) = 3(x+2)^2-7
Answer Link

Otras preguntas

Solve equation using square root property X2-8X+16=1
Air Mass is a large body of air that has the same ____________ and ___________ throughout.
You begin solving the equation 4 – 5x = 59 by subtracting 4 from both sides. Which is the best choice for Step 2?
A merry-go-round makes 18 rotations in 3 minutes. What is its angular speed in rpm?
A picture frame for a square picture has an area of 80 square inches. What is the length of the picture?
What holds calcium chloride together? A. hydrogen bonding B. metallic bonding C. ionic bonding D. dipole forces E. van der Waals forces (London dispersion force
Air Mass is a large body of air that has the same ____________ and ___________ throughout.
solove. draw and lable a tape diagram to subtract tens. write the new number sentence.a. 23 - 9 = 24 - 10 =
Solve: K= 2(11 - k) + 14
Who would have supported the two sides in the English Revolution?