alize123213 alize123213
  • 15-12-2018
  • Mathematics
contestada

What are the roots of this function? f(x) = x2 – 8x + 12 A) {2, 6} B) {8, 12} C) {-3, -4} D) {-4, -4}

Respuesta :

whiskeyo
whiskeyo whiskeyo
  • 15-12-2018

Answer:

A.

Step-by-step explanation:

delta = [tex]b^{2} - 4ac = (-8)^{2}-4*1*12 = 64 - 48 = 16[/tex]

[tex]x_{1} = \frac{b-\sqrt{delta}}{2a} = \frac{8+4}{2} = 6[/tex]  

[tex]x_{2} = \frac{b+\sqrt{delta}}{2a} = \frac{8-4}{2} = 2[/tex]


Answer Link

Otras preguntas

What are the five steps to analyzing an argument?
The proportion of chips to candy bars in a trick-or-treater's pillow case is 2:9. If there are 117 candy bars collected, how many bags of chips are there? Show
Write a story using ALL of the words below. Highlight the words in your story so I know that you used them all. Please include 2 celebrities/ famous people/ cha
Given g(x) = 10x + 2, find x when g(x) = 2.
What aspect of the United States best completes the table?
6) Why did the Jamestown settlement almost not make it? A) Native attacks B) Lack of trade C Weather D) Starvation
Alan and Monica tested how fertilizer X affected the growth of a plant. Alan and Monica put 100 grams of fertilizer X in pot 1. They put 0 grams of fertilizer X
As used in line 67, “employ" most nearly means A) utilize. B) enroll. C) exert. D) assign.
8. Find a point on a line through F(3, 1) and parallel to -3x + 2y = -14. Show your work and explain how you found this point
A fishing line sinker contains 0.650 moles of lead. How many atoms of lead are in the sinker? Show all of your work, including starting quantity, conversion fac