एक (a+b+c) भुजा वाले वर्ग का पूरा क्षेत्रफल किस विस्तार से दिखेगा?
Which expansion shows the full area of a square with side (a+b+c)?
Explanation opens after your attempt
Correct Answer
B. \(a^2+b^2+c^2+2ab+2bc+2ca\)
Concept
Three squares and six cross rectangles give \(a^2+b^2+c^2+2ab+2bc+2ca\). Exam tip: multiply equal pairs by (2).
Why this answer is correct
The correct answer is B. \(a^2+b^2+c^2+2ab+2bc+2ca\). Three squares and six cross rectangles give \(a^2+b^2+c^2+2ab+2bc+2ca\). Exam tip: multiply equal pairs by (2).
Exam Tip
तीन वर्ग और छह क्रॉस आयत मिलकर \(a^2+b^2+c^2+2ab+2bc+2ca\) देते हैं। परीक्षा में समान जोड़ों को (2) से गुणा करें।
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