Question

x²+y²-2(xy-xz+yz) what will be the answer???​

Answer 1

X²+y²+2(xy-yz-zx)

x²+y²+2xy-2yz-2zx

(x²+y²+2xy)-(2yz+2zx)

(x+y)²-2z(y+x). (x²+y²+2xy = (x+y)² )

taking (x+y) common

(x+y)(x+y-2z)

hope this helps

Answer 2

X²+y²+2(xy-yz-zx)

x²+y²+2xy-2yz-2zx

(x²+y²+2xy)-(2yz+2zx)

(x+y)²-2z(y+x). (x²+y²+2xy = (x+y)² )

taking (x+y) common

(x+y)(x+y-2z)

hope this helps