यदि दृश्य मॉडल में \(y^2\) वर्ग से दो \(4y\) आयत घटाए जाते हैं और \(16\) वर्ग जोड़ा जाता है, तो पहचान क्या है?
If a visual model subtracts two \(4y\) rectangles from a \(y^2\) square and adds a \(16\) square, what is the identity?
Explanation opens after your attempt
A. \((y-4)^2=y^2-8y+16\)
Concept
Subtracting two \(4y\) parts gives the middle term \(-8y\). Exam tip: remember \(4^2=16\).
Why this answer is correct
The correct answer is A. \((y-4)^2=y^2-8y+16\). Subtracting two \(4y\) parts gives the middle term \(-8y\). Exam tip: remember \(4^2=16\).
Exam Tip
दो \(4y\) घटने से बीच का पद \(-8y\) बनता है। परीक्षा में \(4^2=16\) याद रखें।
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