Question

a-b-c whole square=?

Answer 1

${(a - b - c)}^{2} \\ {a}^{2} + {b}^{2} + {c}^{2} - 2ab + 2bc - 2ac$
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Answer 2

Let see your answer !!!!

$(a - b - c) ^{2} \\ \\ = (a) ^{2} + ( - b) ^{2} + ( - c) ^{2} + 2 \\ \times a \times ( - b) + 2 \times ( - b) \times( - c) \\ + 2 \times ( - c) \times a\\ \\ = a ^{2} + b ^{2} + c ^{2} - 2ab + 2bc \\ - 2ca$



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