In a parallel electrical circuit the impedance Z can be calculated using the equation Z= where Z, and Z, are the Z, Z2 impedances for the branches of the circuit. If Z, = 50+ 15 i and Z, =30+ 20 i, calculate Z. (Simplify your answer. Type your answer in the form a + bi. Use integers or decimals for any numbers in the expression. Round the final answer to the nearest hundredth as needed. Round all intermediate values to four decimal places as needed.)

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Q: Let a, B and y be the roots of the equation 523 + 22 + 3z + 4 = 0. Find the values of the following:…

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A: Given a→=3i+j-k, b→=2i-j+k, c→=5i+3k 2a→+b→=2(3i+j-k)+(2i-j+k)          =6i+2j-2k+2i-j+k…

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