Hard Mathematics Polynomials Class 10 Level 25

यदि \(x=\sqrt{5}+\sqrt{2}\) है तो \(x^2-2\sqrt{10}\) किस प्रकार की संख्या है?

If \(x=\sqrt{5}+\sqrt{2}\), what type of number is \(x^2-2\sqrt{10}\)?

Explanation opens after your attempt
Correct Answer

A. परिमेय संख्याRational number

Step 1

Concept

Here \(x^2=7+2\sqrt{10}\), so subtracting gives (7). In such questions expand the square first.

Step 2

Why this answer is correct

The correct answer is A. परिमेय संख्या / Rational number. Here \(x^2=7+2\sqrt{10}\), so subtracting gives (7). In such questions expand the square first.

Step 3

Exam Tip

\(x^2=7+2\sqrt{10}\) इसलिए घटाने पर (7) मिलता है। ऐसे प्रश्नों में पहले वर्ग विस्तार करें।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(x=\sqrt{5}+\sqrt{2}\) है तो \(x^2-2\sqrt{10}\) किस प्रकार की संख्या है? / If \(x=\sqrt{5}+\sqrt{2}\), what type of number is \(x^2-2\sqrt{10}\)?

Correct Answer: A. परिमेय संख्या / Rational number. Explanation: \(x^2=7+2\sqrt{10}\) इसलिए घटाने पर (7) मिलता है। ऐसे प्रश्नों में पहले वर्ग विस्तार करें। / Here \(x^2=7+2\sqrt{10}\), so subtracting gives (7). In such questions expand the square first.

Which concept should I revise for this Mathematics MCQ?

Here \(x^2=7+2\sqrt{10}\), so subtracting gives (7). In such questions expand the square first.

What exam hint can help solve this Mathematics question?

\(x^2=7+2\sqrt{10}\) इसलिए घटाने पर (7) मिलता है। ऐसे प्रश्नों में पहले वर्ग विस्तार करें।

Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.