Abbate4498 Abbate4498
  • 04-05-2018
  • Mathematics
contestada

What are the x intercepts of this function f(x) =2x^2-7x-4?

Respuesta :

ktreyb
ktreyb ktreyb
  • 04-05-2018
2x² - 7x - 4 = 0
2x² - 8x + x - 4 = 0
2x(x - 4) + 1(x - 4) = 0

(2x + 1)(x - 4) = 0

Set each binomial equal to zero. 

2x + 1 = 0
2x = - 1
x = - 1/2

x - 4 = 0
x = 4

Your x-intercepts are x = - 1/2, 4 or (- 1/2, 0) and (4, 0)
Answer Link

Otras preguntas

What is the meaning of parasitology?
Which factor is MOST responsible for the ocean tides
What challenges did the Forty Niners face in the west
divide 24 by 6 less than 8
The spherical object within a cell that controls its activity is the _____.
. The AutoCorrect feature can automatically capitalize the first letter in the names of days. True False
Audrey needs to cut 1 meter of yellow ribbon and 28 centimeters of blue ribbon. In total, how much many centimeters of ribbon does she need?
how would you write this as an algebraic equation? k less than 24
A migrating bird flies 308 miles in 11 hours. How many miles does it fly in 3 ​hours?
The study of the human body A. Anatomy B. Botany C. Physiology D. Psychology