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प्रश्न
Evaluate: (6 – xy) (6 + xy)
योग
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उत्तर
(6 – xy) (6 + xy)
= 6(6 + xy) – xy (6 + xy)
= 36 + 6xy – 6xy + (xy)2
= 36 – x2y2
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Product of Sum and Difference of Two Terms
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