Question

given that x+y=-4 and x-y=8, find the value of y square - x square

Answer 1

Answer:x=2 and y= -6

Y square-x square =32

Step-by-step explanation:

Given that x+y=-4 and x-y=8

When solving the above 2 equations we get x as 2 and y as-6

Y^2-x^2= (-6)^2-2^2

=36-4

=2