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Choose the correct expansion of ( (y-4)^2 ).( (y-4)^2 ) का सही विस्तार चुनिए।
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (y^2-8y+16)(y^2-8y+16)
By ( (a-b)^2=a^2-2ab+b^2 ) the middle term is negative. Exam tip: note that (2\times y\times4=8y).( (a-b)^2=a^2-2ab+b^2 ) से बीच का पद ऋणात्मक होता है। परीक्षा में (2\times y\times4=8y) ध्यान रखें।
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