भुजा (5x+2y) वाले वर्ग के दृश्य मॉडल में कुल क्षेत्र क्या होगा?
What will be the total area in the visual model of a square with side (5x+2y)?
Explanation opens after your attempt
B. \(25x^2+20xy+4y^2\)
Concept
The middle term is \(2\times5x\times2y=20xy\). Exam tip: double the product of the two side parts.
Why this answer is correct
The correct answer is B. \(25x^2+20xy+4y^2\). The middle term is \(2\times5x\times2y=20xy\). Exam tip: double the product of the two side parts.
Exam Tip
बीच का पद \(2\times5x\times2y=20xy\) है। परीक्षा में दोनों भुजा भागों का दोगुना गुणन करें।
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