Question

(x+2y+4z)².......................​

Answer 1

Answer:

x²+(2y)²+(4z)²

x²+4y²+16z²

Step-by-step explanation:

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Answer 2

Answer:

x²+4y²+16z²+4xy+16yz+8zx

Step-by-step explanation:

USING THE IDENTITY:-(x+y+z)²=x²+y²+z²+2xy+2yz+2xz

(x+2y+4z)²

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

= x²+4y²+16z²+4xy+16yz+8zx