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

|w| + 1.2 > 0.8 solution or no solution

Japan’s move into China was met by a. economic sanctions. c. threats of war. b. a condemnation. d. blockade of Japan’s ports.

Why did mexico's government refuse to allow foreign factories in Mexico

What factors contributed to the United States becoming a world leader? A.) the US winning the war & having a strong economy B.) the allies winning the war

In order to win support for the Constitution, what did the Federalists promise to add?

Which one of the following word or words is an example of a correlative conjunction? A. Since B. And C. Either . . . or D. Because

what country extends farther west than any other african country

What is the etymology of homophone? from French omnu from Latin homus from Greek homo from Spanish homo

What is the conjunction or conjunctions in the sentence? Neither Sam nor I have heard anything more about the team line-up for the fall. A. about B. for the fal

what was the primary goal of the dawes act of 1887