एक संख्या और उसके वर्ग का योग (210) है। धनात्मक संख्या क्या है?
The sum of a number and its square is (210). What is the positive number?
Explanation opens after your attempt
B. (14)
Concept
\(x^2+x=210\) gives \(x^2+x-210=0\), whose positive solution is (14). While factoring, check factors of (210).
Why this answer is correct
The correct answer is B. (14). \(x^2+x=210\) gives \(x^2+x-210=0\), whose positive solution is (14). While factoring, check factors of (210).
Exam Tip
\(x^2+x=210\) से \(x^2+x-210=0\), जिसका धनात्मक हल (14) है। गुणनखंड बनाते समय (210) के गुणनखंड देखें।
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