Abbate4498 Abbate4498

04-05-2018
Mathematics

contestada

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

Respuesta :

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

Why did the Virginia Company give settlers the right to self-government?

50 is 40% of what number?

what is a device that transforms thermal energy to mechanical energy

50 is 40% of what number?

Jamaal buys his clothes at Super Discounts. On Saturday, he bought shoes regularly priced at $40 for 25% off, and a jacket regularly priced at $100 for 30% off.

You bought a car for $25,000. You have owned it for one year, and it is now worth $21,000. What is the percent decrease in your car's value?16%19%84%119%

The distance from home plate to second base is about 127.3 ft. 1. How would you find the distance between the bases.2. Estimate the distance between the base

How did machines speed up textile manufacturing

what is a device that transforms thermal energy to mechanical energy

You bought a car for $25,000. You have owned it for one year, and it is now worth $21,000. What is the percent decrease in your car's value?16%19%84%119%