(b²+c²+2bc)-(b²-c²-2bc)
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Step-by-step explanation:
b²-c²-bc is mostly there answer I guess....
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(b²+c²+2bc)-(b²-c²-2bc)
b² + c²+ 2bc - b² + c² + 2bc
b² - b² + c² + c² + 2bc + 2bc
= 2c² + 4bc
= 2c( c + 2b)
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