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प्रश्न
Use the product (a + b) (a – b) = a2 – b2 to evaluate:
33 x 27
योग
उत्तर
33 x 27 = (30+3) (30−3)
= (30)2 − (3)2
= 900 − 9
= 891
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Product of Sum and Difference of Two Terms
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