Question

simplify: (a+b-c) (a+b-c)​

Answer 1

Step-by-step explanation:

Given equation: -

(a+b-c) (a+b-c)

Simplifying: -

$(a + b + c)(a + b + c) \\ \rightarrow {a}^{2} + ab + ac + ba + {b}^{2} + bc + ca + cb + {c}^{2} \\ \rightarrow \: {a}^{2} + {b}^{2} + {c}^{2} + (ab + ab) + (ac + ac) + (cb + cb) \\ \rightarrow \: {a}^{2} + {b}^{2} + {c}^{2} + 2ab + 2ac + 2cb$

Answer:

$\: {a}^{2} + {b}^{2} + {c}^{2} + 2ab + 2ac + 2cb$

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