1.

निम्न को `a + ib` के रूप में प्रकट कीजिए: (i) `3(7 + i(7 + i7) + i(7 + i7)` (ii) `(1 -i) - (-1 + i6)` (iii) `[((1)/(3) + i(7)/(3)) + (4 + i(1)/(3))] - (-(4)/(3) + i)` (iv) `(5 + sqrt2i)/(1 -sqrt2i)` (v) `(5i) (-(3)/(5)i)` (vi) `((1)/(5) + i(2)/(5)) - (4 + i(5)/(2))`

Answer» (i) `14 + 28i` (ii) `2 -7i` (iii) `(17)/(3) + i (5)/(3)` (iv) `1 + 2 sqrt2i` (v) 3 (vi) `- (19)/(5) -(21)/(10)i`


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