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

What is nth term for 0 6 24 54 96?
you are planting a rectangle garden. it is 5 feet longer than 3 times its width. the area of the garden is 250 feet. find the dimensions
Why does an electrically heated mirror stay clear when a person has a shower?
can we store electricity from lightning?
what is the farthest distance a human has ever been from earth?
biomedical definition
simplify p8/p2can you help me with this question...anyonnnneee...????
In what ways did contributions from African Americans aid the struggle for abolition?
and what is this A rock band has 5 members, and two fiths of the members play string instruments. Also, 0.4 of the members sing. Does the band have the same num
you are facing east. you turn left, then left again, then about face, then right. which direction are you finally facing?