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If (x^2=196) then what is the positive value of (x)?यदि (x^2=196) तो धनात्मक (x) क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 1414
Given \(x^2=196\), we get \(x=\pm\sqrt{196}=\pm14\). Since the question asks for the positive value of \(x\), the answer is \(14\). The close distractor \(12\) is incorrect because \(12^2=144\), not 196. Exam tip: For \(x^2=a\), there are usually two values, \(\pm\sqrt a\); select only the positive one when asked.दिया है कि \(x^2=196\)। अतः \(x=\pm\sqrt{196}=\pm14\)। प्रश्न में \(x\) का धनात्मक मान पूछा गया है, इसलिए सही उत्तर \(14\) है। \(12\) निकट का विकल्प है, पर \(12^2=144\), 196 नहीं। परीक्षा टिप: \(x^2=a\) में सामान्यतः दो मान \(\pm\sqrt a\) होते हैं; ‘धनात्मक’ शब्द होने पर केवल धनात्मक मान लिखें।
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