Question

(2x-y-z)^2 - (2x+y+ z)^2​

Answer 1

This was the answer I got

Answer 2

${(2x - y - z)}^{2} - {(2x + y + z)}^{2} \\ = (2x - y - z + 2x + y + z)(2x - y - z - 2x - y - z) \\ = (4x)( - 2y - 2z) \\ = (4x)( - 2)(y + z) \\ = ( - 8x)(y + z)$