Question 193
If $$9^{2}$$ is subtracted from a square of a number, the value so obtained is 544. What is the number ?
Solution
Let , the number be 'x' .
Given that , $$x^{2}$$ - $$9^{2}$$ = 544 .
so , $$x^{2}$$ = 544 + $$9^{2}$$
$$x^{2}$$ = 625
Hence , x = √625
= 25
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