एक (10) बाय (10) वर्ग में से (2) चौड़ाई की पट्टियां हटाकर (8) बाय (8) वर्ग दिखाया गया। यह किस संख्यात्मक पहचान को समझाता है?

A (10) by (10) square is reduced by removing strips of width (2) to show an (8) by (8) square. Which numerical identity does it explain?

Author: Muft Shiksha Editorial Team Published: Updated:
Explanation opens after your attempt
Correct Answer

A. \(8^2=10^2-2\cdot10\cdot2+2^2\)difference square

Step 1

Concept

Since (8=10-2), this is a model of ((a-b)2). In exams do not forget to add back the overlap in a reduced square.

Step 2

Why this answer is correct

The correct answer is A. \(8^2=10^2-2\cdot10\cdot2+2^2\) / difference square. Since (8=10-2), this is a model of ((a-b)2). In exams do not forget to add back the overlap in a reduced square.

Step 3

Exam Tip

(8=10-2) इसलिए यह ((a-b)2) का मॉडल है। परीक्षा में घटे हुए वर्ग में ओवरलैप को जोड़ना न भूलें।

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Mathematics Answer, Explanation and Revision Hints

एक (10) बाय (10) वर्ग में से (2) चौड़ाई की पट्टियां हटाकर (8) बाय (8) वर्ग दिखाया गया। यह किस संख्यात्मक पहचान को समझाता है? / A (10) by (10) square is reduced by removing strips of width (2) to show an (8) by (8) square. Which numerical identity does it explain?

Correct Answer: A. \(8^2=10^2-2\cdot10\cdot2+2^2\) / difference square. Explanation: (8=10-2) इसलिए यह ((a-b)2) का मॉडल है। परीक्षा में घटे हुए वर्ग में ओवरलैप को जोड़ना न भूलें। / Since (8=10-2), this is a model of ((a-b)2). In exams do not forget to add back the overlap in a reduced square.

Which concept should I revise for this Mathematics MCQ?

Since (8=10-2), this is a model of ((a-b)2). In exams do not forget to add back the overlap in a reduced square.

What exam hint can help solve this Mathematics question?

(8=10-2) इसलिए यह ((a-b)2) का मॉडल है। परीक्षा में घटे हुए वर्ग में ओवरलैप को जोड़ना न भूलें।