यदि (p(x)=x-2-4x-6) है, तो शून्यकों का सही युग्म कौन सा है?
If (p(x)=x-2-4x-6), which is the correct pair of zeroes?
Explanation opens after your attempt
Correct Answer
A. \(2\pm\sqrt{10}\)
Concept
By the formula, \(x=\frac{4\pm\sqrt{16+24}}{2}=2\pm\sqrt{10}\). Remember \(\sqrt{40}=2\sqrt{10}\) while simplifying (D).
Why this answer is correct
The correct answer is A. \(2\pm\sqrt{10}\). By the formula, \(x=\frac{4\pm\sqrt{16+24}}{2}=2\pm\sqrt{10}\). Remember \(\sqrt{40}=2\sqrt{10}\) while simplifying (D).
Exam Tip
सूत्र से \(x=\frac{4\pm\sqrt{16+24}}{2}=2\pm\sqrt{10}\) है। (D) को सरल करने में \(\sqrt{40}=2\sqrt{10}\) याद रखें।
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