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

A quarterback completed 68% of his passes in a game. He threw 25 passes. How many passes did the quarterback complete?
what was the most common role for women in sumerian society ??
the bakers at healthy bakery can make 210 bagel in 10 hours. how many bagels can they bake in 20 hours?what was that rate per hour
The rectangular solid has a mass of 3,300 grams. What is the density of the substance? with the sides of the cube being 50 cm, 10 cm 30 cm 0.22 g/cm 3 4.5 g/cm
Can someone help me on this question i'm not good in math. Kenneth drove 197.65 miles in hours. What was his average speed? (a) 53 mph (b) 66 mph (c) 61 mph (d
2 (12 - 8x ) = x - 11x
China was easily defeated by the British in the first Opium War because?
Is 324 divisible by 4?
The base of a triangle is 3 cm longer than its altitude. The area of the triangle is 35cm^2. Find the altitude. (Hint: use the area of a triangle. 1/2 * base *
Round 287.63 to the nearest whole number.