milesisaway milesisaway
  • 03-04-2017
  • Mathematics
contestada

Factor completely: 2x2 - 6x - 56

(2x - 14)(x + 4)
(x - 7)(2x + 8)
2(x - 7)(x + 4)
2(x - 4)(x + 7)

Respuesta :

Аноним Аноним
  • 04-04-2017
The correct answer is, C. 2(x-7) (x+4)

I hope this helps. :)

And have a great day. :D
Answer Link
slicergiza slicergiza
  • 24-07-2019

Answer:

2(x - 7)(x + 4)

Step-by-step explanation:

Given expression is,

[tex]2x^2 - 6x - 56[/tex]

By the middle term splitting,

[tex]=2x^2-(14-8)x-56[/tex]

[tex]=2x^2-14x+8x-56[/tex]

[tex]=2x(x-7)+8(x-7)[/tex]

[tex]=(2x+8)(x-7)[/tex]

[tex]=2(x-7)(x+4)[/tex]

Since, further simplification is not possible,

Hence, third option is correct.

Answer Link

Otras preguntas

an experimental measurement was taken of 10.4ml and the actual measurement was 9.7ml what was the percent error
President Johnson eventually asked for and received a declaration of war against the country of North Vietnam. True or false?
what is the median and mode for 250,270,280,280,320
can someone give me a summary about the snow queen?
How do you find the perimeter of a box?
In what ways does Ismene differ from her sister, Antigone, in Antigone? She cares more about public opinion and approval than does Antigone, who always follows
define variable in your own words
All the factors of 42 and 38. Thanks :)!
Lainey is sliding down a water slide that is 440 feet long at a rate of 44 feet per second. How long will it take Lainey to travel from the top to the bottom of
What is the ratio of 0.9 and 0.8