यदि \(x^2+ax+b=0\) की जड़ें \(2+\sqrt{3}\) और \(2-\sqrt{3}\) हैं, तो (a+b) का मान क्या है?
If the roots of \(x^2+ax+b=0\) are \(2+\sqrt{3}\) and \(2-\sqrt{3}\), what is (a+b)?
Explanation opens after your attempt
Correct Answer
A. (-3)
Concept
The sum of roots is (4), so (a=-4). The product is (1), so (b=1), hence (a+b=-3).
Why this answer is correct
The correct answer is A. (-3). The sum of roots is (4), so (a=-4). The product is (1), so (b=1), hence (a+b=-3).
Exam Tip
जड़ों का योग (4) है, इसलिए (a=-4)। गुणनफल (1) है, इसलिए (b=1), अतः (a+b=-3)।
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