multiply (X + Y + Z ) (X + Y + Z)
Answers
Answered by
0
x^2+y^2+z^2+2xy+2yz+2zx
Answered by
1
=X (X + Y + Z ) +Y (X + Y + Z ) +Z( X + Y + Z )
=X^2 + XY + XZ + XY + Y^2 +ZY +ZX +ZY+Z ^2
=X^2 + Y^2 + Z^2 + 2XY + 2YZ + 2XZ
=X^2 + XY + XZ + XY + Y^2 +ZY +ZX +ZY+Z ^2
=X^2 + Y^2 + Z^2 + 2XY + 2YZ + 2XZ
Similar questions