Question

what is the expanded form of (x+2y+z)2​

Answer 1

Answer:

given, (3x+2y−z)

2

=[3x+2y+(−z)]

2

=(3x)

2

+(2y)

2

+(−z)

2

+2×3x×2y+2×2y×−z+2×3x×−z

=9x

2

+4y

2

+z

2

+12xy−4yz−6xz

Step-by-step explanation:

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Answer 2

Answer:

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

Step-by-step explanation:

Use the property

(a+b+C) =a^2+b^2+c^2+2ab+2bc+2ca

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