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प्रश्न
Using suitable identities, evaluate the following.
(132)2 – (68)2
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उत्तर
We have,
(132)2 – (68)2 = (132 + 68)(132 – 68) ...[Using the identity, a2 – b2 = (a + b)(a – b)]
= 200 × 64
= 12800
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