Question

(x+y+2z)^2 USING IDENTITY

Answer 1

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➡ (x + y + 2z)²

• (a + b + c)² = a² + b² + c² + 2[ab + bc + ac]

➡ (x)² + (y)² + (2z)² + 2[(x.y) + (y.2z) + (x.2z)]

➡ x² + y² + 4z² + 2xy + 4yz + 4xz

Step-by-step explanation:

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Answer 2

a ^2+b^2+c^2






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