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

What is the answer60\5(7-5)
3. What were the Crusades, and how did they serve to weaken the Byzantine Empire?
I need this solve 34÷73,227
Why is y^2=x+2 not a function?
Which of these best describes a desert climate
Steven wants to buy a $565 bicycle. Steven has no money saved, but will be able to deposit $30 into a savings account when he receives his paycheck each Friday.
the boston tea party of 1773 was done to protest
what did General MacArthur address Congress after he was fired
what are three kinds of perspective that geographers use to look at the world
Which type of figurative language does the poet use most often in "Chicago"? A. rhyme B. simile C. metaphor D. personification