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the sum of the digits of a certain twodigit number equals the square root of the number? what is the number?
 one year ago
 one year ago
the sum of the digits of a certain twodigit number equals the square root of the number? what is the number?
 one year ago
 one year ago

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electrokidBest ResponseYou've already chosen the best response.1
conside the number 23 \(23 = 2\times10+3\) so if a number is formed by two digits "a" and "b" then the number is \(a\times10+b\)
 one year ago

electrokidBest ResponseYou've already chosen the best response.1
so, the condition in the problem gives us: \[a+b=\sqrt{a\times10+b}\]
 one year ago
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