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व्यंजनक 50xy +10yx + 30xy + 6y का गुणनखण्ड कीजिए। यदि x = 1, y = 2 हो तो दिये गये व्यंजक के गुणनखण्ड का मान ज्ञात करें।

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Best answer

50x2y + 10y2x + 30xy + 6y2

= 10y2x + 50x2y + 6y2 + 30xy

= 10xy (y + 5x) + 6y (y + 5x)

= (y + 5x) (10xy + 6y)

यदि x = 1, तथा y = 2 रखने पर

= (x +5 x 1) (10 × 1 x 2 + 6 x 2)

= (2 + 5) (20 + 12)

= 7 x 32 = 224

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