Consider the following. Cube roots of -343 0 + 2xk 0 + 2rk (a) Use the formula z = V7(cos + i sin to find the indicated roots of the complex number. (Enter your answers in trigonometric form. Let 0 s0< 2n.) n n Zo = z = z, = (b) Write each of the roots in standard form. Zo = z =

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