Question: 1Q: Simplify the complex number 7 (2;) - 5 (1,;) 2 and express it in the standard form. 2Q: Express the complex number z =

1Q: Simplify the complex number 7 (2;) - 5 (1,;) 2 and express it in the standard form. 2Q: Express the complex number z = -2v4 + 1li in polar form and also represent it graphically. Hence find the value of In(z). 3Q: If z1 = 1.5 cis " and z2 = 4 cis(-" ) find and express it in the rectangular form. 4Q: Using De Movier's Theorem find all roots of (-V3 + 1) 1/2. 50: Solve the differential equation y" + 5xy' + y = 0 by power series method

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