Question

simplify (a+b+c)^2-(a-b+c)^2​

Answer 1

Step-by-step explanation:

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Answer 2

${(a + b + c)}^{2} - {(a - b + c)}^{2} \\ (a + b + c + a - b + c)(a + b + c - a + b - c) \\ (2a + 2c)(2b) \\ 4ab + 4bc$
by using formula

a²-b²=(a+b)(a-b)