Question

(x+2y+z)^2 + (x-2y+z)^2
expand and simplify ​

Answer 1

Answer: 2(X^2 + 4y^2 + z^2 + 2xz)

= x^2 + (4y)^2 + z^2 + 4xy + 4yz + 2xz + x^2 + x^2 + (4y)^2 + z^2 - 4xy - 4yz + 2xz

= 2x^2 + 8y^2 + 2z^2 + 4xz

= 2(X^2 + 4y^2 + z^2 + 2xz)

Step-by-step explanation:

Answer 2

Answer:

hello dude

2(X^2 + 4y^2 + z^2 + 2xz)

= x^2 + (4y)^2 + z^2 + 4xy + 4yz + 2xz + x^2 + x^2 + (4y)^2 + z^2 - 4xy - 4yz + 2xz

= 2x^2 + 8y^2 + 2z^2 + 4xz

= 2(X^2 + 4y^2 + z^2 + 2xz)

hope this helps

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