Question

(a +2b +c)²



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Answer 1

Step-by-step explanation:

the answer will be

a²+4b²+c²+4abc OK friend

Answer 2

Answer:

( a + 2b + c )² = a² + 4b² + c² + 4ab + 4bc + 2ca

Step-by-step explanation:

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

then ( a + 2b + c )² = a² + (2b)² + c² + ( 2a × 2b ) + ( 2 × 2b × c ) + ( 2ca )

= a² + 4b² + c² + 4ab + 4bc + 2ca

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