Question

expand each of the following using suitable identities X + 2 Y + 4 Z whole square ​

Answer 1

Answer:

(x + 2y +

4z)²

Using identity,

(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ca

Here, a = x, b = 2y and c = 4z

(x + 2y + 4z)²

 = x² + (2y)² +

(4z)²² + (2×x×2y) + (2×2y×4z) + (2×4z×x)

                   

= x² +

4y² + 16z²+ 4xy + 16yz + 8xz

 

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Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

(x+2y+4z)^2

(x^2)+(4y^2)+(16z^2)+4xy+16yz+8zx