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What is the factorised form of (x^2+2xy+y^2-4z^2+4x+4y)?(x^2+2xy+y^2-4z^2+4x+4y) का गुणनखंड रूप क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((x+y-2z+2)(x+y+2z+2))((x+y-2z+2)(x+y+2z+2))
Writing it as ((x+y)^2+4(x+y)-4z^2) does not directly factor as option (D). Verify by expansion carefully.इसे ((x+y)^2+4(x+y)-4z^2) लिखने से तुरंत नहीं टूटता, पर ((x+y+2)^2-(2z)^2-4) नहीं है। सही जाँच विस्तार से करें।
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