Question

(a + b)2 + (b + c)2 =​

Answer 1

Answer:

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

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

a²+b²+2(a)(b) +b²+c²+2(b)(c)

a²+b²+2ab+b²+c²+2b c

a²+b²+b²+²+2ab+2bc

a²+2b²+2ab+2bc