\(x^2+18x+81=0\) को किस रूप में लिखा जा सकता है?

In which form can \(x^2+18x+81=0\) be written?

Explanation opens after your attempt
Correct Answer

A. ((x+9)2=0)

Step 1

Concept

(x-2+18x+81=(x+9)2), so it is a perfect square. In exams, match it using \(2\cdot9x=18x\).

Step 2

Why this answer is correct

The correct answer is A. ((x+9)2=0). (x-2+18x+81=(x+9)2), so it is a perfect square. In exams, match it using \(2\cdot9x=18x\).

Step 3

Exam Tip

(x-2+18x+81=(x+9)2), इसलिए यह पूर्ण वर्ग है। परीक्षा में \(2\cdot9x=18x\) से मिलान करें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

\(x^2+18x+81=0\) को किस रूप में लिखा जा सकता है? / In which form can \(x^2+18x+81=0\) be written?

Correct Answer: A. ((x+9)2=0). Explanation: (x-2+18x+81=(x+9)2), इसलिए यह पूर्ण वर्ग है। परीक्षा में \(2\cdot9x=18x\) से मिलान करें। / (x-2+18x+81=(x+9)2), so it is a perfect square. In exams, match it using \(2\cdot9x=18x\).

Which concept should I revise for this Mathematics MCQ?

(x-2+18x+81=(x+9)2), so it is a perfect square. In exams, match it using \(2\cdot9x=18x\).

What exam hint can help solve this Mathematics question?

(x-2+18x+81=(x+9)2), इसलिए यह पूर्ण वर्ग है। परीक्षा में \(2\cdot9x=18x\) से मिलान करें।