Question

fast with complete explanation

Answer 1

Hello!

x+y=2z
z=x+y/2

x/x-z+z/y-z

x(y-z)+z(x-z)/ (x-z)(y-z)

xy-xz+xz-z²/(x-z)(y-z)

xy-z²/(x-z)(y-z)

xy-z²/(2x-x-y/2)(2y-x-y)/2
xy-z²/(x-y/2)(y-x)/2

4(xy-z²)/xy-x²-y²+xy

4(xy-z²)/(-x²-y²+2xy)

4(xy-z²)/ -(x²+y²-2xy)

-4(xy-z²)/(x-y)²

-4[4xy- (x+y)²/4] /( x-y )²

4[(x+y)²-4xy/4]/(x-y)²

4[x-y]²/4(x-y)²

4 /4
=1

There fore the answer is 1

Answer 2

Hope this helps.............