Question: 1). Evaluate the cube root of z = 2 7 c i s ( 2 4 0 ) . Then raise them to the cube.

1). Evaluate the cube root of z=27cis(240). Then raise them to the cube. Show the steps of your reasoning.

2). Evaluate [53(23+2i)]10. Show workings

3). Findz2z1in polar form:

z1=21cis(135) z2=3cis(75) . show workings

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