Question

find value of (x+y)² + (x-y)² ​

Answer 1

Answer:

x^2+2xy+y^2+x^2-2xy+y^2

cancel 2xy and -2xy

2x^2+2y^2

Answer 2

Answer:

$(x {}^{2} + 2xy + y {}^{2} ) + (x { }^{2} - 2xy + y {2} )$

$open \: brackets \:$

${x}^{2} + {x}^{2} + {y}^{2} + {y}^{2} - 2xy + 2xy$

$2 {x}^{2} + 2 {y}^{2}$

hope it helps you <3