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NCERT Class XI Mathematics - Complex Numbers and Quadratic Equations - Solutions

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Question : 2
Total: 52
i9+i19
Solution:  
i9+i19 = (i2)4.i+(i2)9i = (−1)4.i+(−1)9i = i + (- 1 ) i = i - i = 0 = 0 + 0i
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