Question

Expand using suitable identity (x+2y+4z) 2

Answer 1

Answer:

(x+2y+4z)^2

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

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

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

Answer 2

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