Question

find the product of x-y-z and y+z​

Answer 1

$\sf{\underline{\underline{\huge{\mathbb{SOLUTION}}}}}$

$\sf\implies ( y + z ) ( x - y - z )$

$\sf\implies y ( x - y - z ) + z ( x - y - z )$

$\sf\implies xy - y^2 - yz + xz - yz - z^2$

$\sf\implies xy - y^2 - 2yz + xz - z^2$

Answer 2

$\sf{\red{\boxed{\bold{Solution}}}}$

⠀⠀⠀⠀

$: \longrightarrow\: \sf{\bold{ ( x - y - z) ( y + z ) }}$

⠀⠀⠀

$: \longrightarrow\: \sf{\bold{ y ( x - y - z) + z ( x - y - z )}}$

⠀⠀⠀⠀

$: \longrightarrow\: \sf{\bold{ xy - y^2 - yz + xz - yz - z^2 }}$

⠀⠀⠀⠀

$: \longrightarrow\: \sf{\bold{ 2yz - y^2 - z^2 - xy + xz }}$