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Instructions
What will come in place of the question mark (?) in each of the following questions ?
Solution
Expression : $$\sqrt{(176\times2+3^{2})}=4+\sqrt{?}$$
=> $$\sqrt{352 + 9} = 4 + \sqrt{x}$$
=> $$\sqrt{361} = 4 + \sqrt{x}$$
=> $$19 = 4 +\sqrt{x}$$
=> $$\sqrt{x} = 19 - 4 = 15$$
=> $$x = (15)^2 = 225$$
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