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mixer [17]
3 years ago
6

( a - b - c )^2 - ( b - c )^2 + 2ab - 2ac

Mathematics
1 answer:
BigorU [14]3 years ago
6 0

Answer:

a^2 + 4bc

Step-by-step explanation:

Step 1: Expand the equations individually:

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

Step 2: Put them back together

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

Step 3: Final Answer

= a^{2} + 4bc

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