Question

Please help me solve this question

Answer 1

Step-by-step explanation:

${(a - b + c)}^{2} + {(b - c + a)}^{2} + 2(a - b + c)(b - c + a) \\ \\ we \: know \: that \: \: \: \: \: \: \: \: {(x + y)}^{2} = {x}^{2} + {y}^{2} + 2xy \\ \\ as \: per \: above \: formula \: \\ \\ we \: get \\ \\ = [(a - b + c) + (b - c + a)] ^{2} \\ \\ = [a - b + c + b - c + a]^{2} \\ \\ = (a + a) ^{2} \\ \\ = (2a) ^{2} \\ \\ = 4 {a}^{2}$

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