Answer:
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Answer:
82
Step-by-step explanation:
(a+b)^2 + (a-b)^2
= a^2+2ab+b^2 + a^2-2ab+b^2
= 2(a^2+b^2)
so,
2(a^2+b^2) = 100+64
a^2+b^2 = 82