K1endakaileyf K1endakaileyf

02-09-2016
Mathematics

contestada

Find the x-intercepts for the parabola defined by the equation below. y = 2x2 + 2x - 4

Respuesta :

HomertheGenius HomertheGenius

02-09-2016

2 x² + 2 x - 4 = 0
2 x² + 4 x - 2 x - 4 = 0
2 x ( x + 2 ) - 2 ( x + 2 ) = 0
( x + 2 ) ( 2 x - 2 ) 0 0
x + 2 = 0, or : 2 x - 2 = 0
x = - 2, 2 x = 2, x = 1
The x-intercepts are: ( -2, 0 ) and ( 1, 0 ).

Answer Link

Otras preguntas

what is the sentence pattern in each sentence? In eighteenth century england, slave ships were a common sight.

3/2:5/7=12/5:x solve for X

caustic is to sting as _______ is to __________ a. wry is to tickle b. trite is to stun c. pompous is to grab d. curt is to embrace e. judicious is to grip

HELPPPPP If someone asks you to describe your first day of school, you would most likely retrieve a(n) ________ memory

if Sn is the nth partial sum of the harmonic series, show that e^Sn > n+1. Why does this imply that the harmonic series is divergent?

What is the perimeter of the hexagon? Regular hexagon with each side labeled fifteen feet. ft Question Resources

What is (6x4 - 7x3 - 153x2 + 175x + 75) divided by (x + 5)?

A store purchased a DVD for 12.00 and sold it to the customers for 50% more than the purchase price. The customer was charged a 7% tax when the DVD was sold. Wh

Rodrigo practice play the guitar 15 1/3 hours over the past 3 weeks.He practiced for 6 1/4 hours during the first week and 3 2/3 hours during the second week. H

What is the Volume of a cylinder with base radius 4 and height 7. Use 3.14 for pie.