xpnjz5nbcw xpnjz5nbcw

23-08-2021
Mathematics

contestada

Select all solutions to the equation (2x — 4)(x + 5) = 0.

x = -1/2

x = 1/2

x = -2

x = 2

x = -5

x = 5

Respuesta :

mahrezrokaya mahrezrokaya

24-08-2021

Answer:

(2x-4) (x+5)=0

2x(x+5) -4(x+5)=0

2x^2+10x-4x-20=0

2x^2+6x-20=0

x^2+3x-10=0 ( Taking common of 2 )

x^2+(5-2)x-10=0 • (3=(5-2)x)

x^2+5x-2x-10=0

x(x+5)-2(x-5) =0 • Taking common

(x+5)(x-2) =0

so x=-5 or x=2.

Answer Link

Otras preguntas

How is the process of fertilization in animals like the process that takes place in plants? A. A sperm cell and an egg cell combine to form an embryo. B. Sperm

the function of the cilia in the nose is to

what was the Powhatan confederacy and how did the group interact with the British settlers

When you add 18 to 1/4 of a number, you get the number itself.

When you add 18 to 1/4 of a number, you get the number itself.

A contractor digs a hole for the basements of a new house that is 40 feet long and 10 1/2 feet deep. What is the width of the hole if 6,510 cubic feet of dirt a

When electromagnetic radiation is arranged to wavelength and frequency, it forms the A. electromagnetic spectrum. B. multiple-spectrum vividness. C. ecliptic pl

(c-30)(c-120)=184 how do I solve it

How is the process of fertilization in animals like the process that takes place in plants? A. A sperm cell and an egg cell combine to form an embryo. B. Sperm

what is 1/10 of 1000