Q6 of 202 Page 153

Prove that 6i50 + 5i33 – 2i15 + 6i48 = 7i.

Given: 6i50 + 5i33 – 2i15 + 6i48


To prove: 6i50 + 5i33 – 2i15 + 6i48 = 7i


6i4×12+2 + 5i4×8+1 – 2i4×3+3 + 6i4×12


6i2 + 5i1 – 2i3 + 6i0


-6+5i+2i+6


7i



Hence proved.


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