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

Help me please I don’t speak english I from to paris
what is the coordinates of a?
A woman spent Rs. 150 on making a dish. This was 30% of the money she had before. Find the amount she had before
HELP ASAP 1.A term that is a known number without variables. is called?
What is the theme of Sonnet 29? a) The speaker must learn to live with his disappointments. B) The memory of the speaker's beloved makes up for all of life's tr
letter on over population​
A group of 9 workers was assigned to paint the walls in a house, which could be completed in 48 hours. However, after working 8 hours, some of the workers left
Need the answer please thank you!
If you have 3 sticks of length 2 cm, 3 cm and 5 cm. What kind of triangle these sticks would form? Justify your answer.
Chelsea & Man City who is going to win?​