If y - x = 2 and y + x = - 2, then

(x+y) (x - y) =

(A) - 4 (B) - 2 (C) 0 (D) 2

(E) 4

Question

Mathematics

Cassandra Best

14 January, 19:29

If y - x = 2 and y + x = - 2, then

(x+y) (x - y) =

(A) - 4 (B) - 2 (C) 0 (D) 2

(E) 4

+4

Answers (1)

Know the Answer?

Claire Hancock · Answer 1

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

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

If y - x = 2 and y + x = - 2, then

(x+y) (x - y) =

(A) - 4 (B) - 2 (C) 0 (D) 2

(E) 4