What should come in place of the question mark (?) in the following questions?
$$8 \times 5 + (?)^{2} = (11)^{²}$$
Expression : $$8 \times 5 + (?)^{2} = (11)^{2}$$
=> $$40 + (?)^2 = 121$$
=> $$? = \sqrt{121 - 40} = \sqrt{81}$$
=> $$? = 9$$
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