Question

Plz friends answer it fast .....​

Answer 1

Step-by-step explanation:

(2x+4y+3z)²

2x²+4y²+3z²+2(2)(4) - 2(4)(3) - 2(3)(2)

2x²+4y²+3z²+2(8)-2(12)-2(6)

2x²+4y²+3z²+16-24-12

2x²+4y²+3z²-20

[this is done using (x+y+z)² identity]

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