marleeshaleah marleeshaleah

23-03-2019
Mathematics

contestada

If for all real values of x, (x + c)(x + 4) = x2 + 8x + 4c, then c = ?

A. 2
B. 4
C. 6
D. 8
E. 10

Respuesta :

sqdancefan sqdancefan

24-03-2019

Answer:

B. 4

Step-by-step explanation:

When you perform the multiplication, you get ...

(x +c)(x +4) = x² + (c+4)x +4c = x² + 8x +4c

Then ...

c + 4 = 8 . . . . coefficients of x must match

c = 4 . . . . . matches choice B

Answer Link

Otras preguntas

Wood carving made made by American Indians of the northwest

The colonies that became the original United States were part of which European nation's land claims?

Four times the difference of f squared and g, increased by the sum of f squared and 2g

Ms Sims is putting away 22 books. She can put them on the table in stacks of 10 or as single books. What are the different ways Ms Sims can't put away the books

why is the science method important for experiments?

Eric, Roberto, and Mónica say goodbye to each other in spanish

What is 20,999 times 999,999

if Antelope travels 105 miles in 3 hours how far will it travel in 11 hours

Lin sold 4 more shirts than Greg. Fran sold 3 times as many shirts as Lin. In total the three sold 51 shirts. Which represents the number of shirts Greg sold

Nancy is reading a speech on animal rights, but to ensure that she fully understands the speaker’s ideas, she is breaking it down piece by piece. What stage of