Question

Find the product of :
(x+2y + z) (x+2y + z)​

Answer 1

Step-by-step explanation:

(x+2y+z)²

= x² + 4y² + z² + 2( 2xy + 2yz + xz)

=x² + 4y² + z² + 4xy + 4yz + 2xz

Answer 2

Step-by-step explanation:

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