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एक से अधिक उत्तर प्रकार के प्रश्न

If a – b = a2 + b2 + 2ab and a + b = a2 + b2 – 2ab, then which of the following is/are correct?

यदि a – b = a2 + b2 + 2ab तथा a + b = a2 + b2 – 2ab, तब निम्नलिखित में से कौनसा/कौनसे विकल्प सही है/हैं?

A
5 – 6 = 121
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B
5 – 6 = 1
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C
7 + 2 = 25
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D
7 + 2 = 81
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Solution

The correct option is C 7 + 2 = 25
Solution

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