Question

write the expansion of each of the following (x+2y+3z)^2

Answer 1

Answer:

2*x ,2*2y,2*3z

2x+4y+6z

Answer 2

We know,

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

= x² + 4y² + 9z² + 4xy + 12yz + 6xz

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