(a) If C is the circle Izl = R, show that linn (2 + 4)(z2 +22+2) (b) Use the result of (a) to deduce that if Ci is the circle lz-2 5, then (2 +42 +2z+2) Ci (c) Is the result in (b) true if Ci is the circle lz+1l 2? Explain.

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