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Question

If a=2+5 and b=1a, then find a2+b2

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Solution

a=2+5
b=1a
b=1(25)(2+5(25)=2545
b=25.
So a2+b2
(2+5)2+(25)2
4+5+45+4+545
18.

1208510_1450151_ans_3c7b22e80b084a5eb06a9f7252e21feb.jpg

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