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

Please Help me with my math
There were 4/5 as many cars at the at the race the second year as the first if there were 32 cars and second year how many cars are there the first year?
Is an intersex person the same as a hermaphrodite? Explain.
Which of the following is NOT true for an exothermic process? A.)heat is transferred into the container B.)q for the process is negative C.)potential energy is
To play a certain lottery, a person has to correctly select 5 out of 58 numbers, paying $1 for each a. What is the probability that a person with one combinatio
could someone help with this?
if linh removes bulb 3, which bulbs will remain lit
What are three techniques used to generate ideas?
What is the total resistance in the circuit? (include unit in answer - ohms) I WILL GIVE BRAINLIEST!!
Kindly help me!!!!!!