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The value of $(3 + 7) 2$ after simplifying it is [[1]].

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answer is 10 + 2 21.

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Detailed Solution

Given-

To determine the value of

after simplifying it.
We can simplify it as,

3 + 7 2 = 3 + 7 + 221 [∵ (a + b) 2 = a 2 + b 2 + 2 a b] ⇒ 3 + 7 2 = 10 + 221

Thus, value of

(3 + 7) 2

after simplifying it is

10 + 221

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