nour47 nour47
  • 04-09-2019
  • Mathematics
contestada

If y - x = 2 and y + x = -2, then
(x+y)(x - y) =
(A) -4 (B) -2 (C) 0 (D) 2
(E) 4

Respuesta :

tonio98
tonio98 tonio98
  • 04-09-2019
54 dhdndifivdhdjsjsjjdjxjsjsjdj
Answer Link
litaisone
litaisone litaisone
  • 04-09-2019

Answer:

E: 4

Step-by-step explanation:

This is a system of equations so is you line them up and subtract them, you get -2x=4. solve it and you get x=-2. Then plug it into one of the equations to get y. (y=0). since y is equal to 0, we can conclude that  -2x-2=4

Answer Link

Otras preguntas

I walked 280m of the road from the park to the station. This is equivalent to 9/10 of the total distance. How many meters is the total distance from the park to
B. Read the different parts of the above text and answer the following question1. List the benefits of team sports​
Please answer all four of the questions I would really appreciate it <3
Help meeeeeeeeeeeeeeeeee
The SAT is the most widely used test in the undergraduaté admissions process, Scores on the math portion of the SAT are believed to be normally distributed and
sin theta = 1/4, tan theta > 0 Find cos theta/2
urgent help algebra 2
How do development within each domain is linked to and affected by development in other domain.
1. Which of the following is not considered clinical information? A. Advance directives B. Immunization records C. P
which best describes series​