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प्रश्न
Choose the right answers from the option:
The difference of the squares, (612 – 512 ) is equal to ______.
विकल्प
1120
1230
1240
1250
उत्तर
(612 – 512)
= (61 - 51)(61 51) ....(∵ (a2 - b2) = (a + b)(a - b))
= 10 × 112
= 1120
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