Instructions
What value should come in the place of question mark (?) in the following questions ?
Solution
Expression : $$(11)^{2} + (9)^{2} - (14)^{2} + ? = 3^{2}$$
=> $$121 + 81 - 196 + ? = 9$$
=> $$6 + ? = 9$$
=> $$? = 9 - 6 = 3$$
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