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Question
The difference of the squares, (612 – 512 ) is equal to ______.
Options
1120
1230
1240
1250
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Solution
The difference of the squares, (612 – 512 ) is equal to 1120.
Explanation:
(612 – 512)
= (61 – 51)(61 51) ....(∵ (a2 − b2) = (a + b)(a − b))
= 10 × 112
= 1120
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