एक संख्या के वर्ग और संख्या के (9) गुने का अंतर (90) है। धनात्मक संख्या क्या है?
The difference between the square of a number and (9) times the number is (90). What is the positive number?
Explanation opens after your attempt
C. (15)
Concept
The equation is \(x^2-9x=90\), or \(x^2-9x-90=0\), which gives (x=15). Keep the subtraction order correct in difference statements.
Why this answer is correct
The correct answer is C. (15). The equation is \(x^2-9x=90\), or \(x^2-9x-90=0\), which gives (x=15). Keep the subtraction order correct in difference statements.
Exam Tip
समीकरण \(x^2-9x=90\) है, यानी \(x^2-9x-90=0\), जिससे (x=15) मिलता है। अंतर वाले वाक्य में घटाव का क्रम सही रखें।
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