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Zinaida [17]
4 years ago
15

Simplify: ( ++)2 + ( −+)2 + ( +−)2

Mathematics
1 answer:
cestrela7 [59]4 years ago
4 0

Answer:

-2

Step-by-step explanation:

( ++)2 + ( -+)2 + ( +-)2

++ = +

-+ = -

+- = -

( +)2 + ( -)2 + ( -)2

2-2-2

=-2

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