In each of the following cases represent 21, 22 and 2₁ +22 in an Argand diagram and verify that ||²₁|-|2₂|1 ≤ 1²1 +2₂1 ≤ ₁+12₂|1 (b) =-1-1, 22 = 7 - i. (a) ₁ = 12 + 5i, 2 = −3+4i

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