यदि समीकरण \(x^2+bx+144=0\) के दोनों मूल समान हैं और उनका मान (-12) है, तो (b) क्या है?
If both roots of \(x^2+bx+144=0\) are equal and their value is (-12), what is (b)?
Explanation opens after your attempt
Correct Answer
A. (24)
Concept
Both roots are (-12), so the sum is (-24). Here the sum of roots is (-b), so (b=24).
Why this answer is correct
The correct answer is A. (24). Both roots are (-12), so the sum is (-24). Here the sum of roots is (-b), so (b=24).
Exam Tip
दोनों मूल (-12) हैं, इसलिए योग (-24) है। यहाँ मूलों का योग (-b) है, अतः (b=24)।
Login to save your score, XP, coins and progress.