(i) Q.2 Solve the following Short Questions: Find the z-z, where z =1+i and z = 6-i. 1 7 (ii) If A I+ Find A (A) (2 10 = 20) (iii) Find the three cube roots of unity. (iv) (v) (vi) Show that the roots of equation 2x + (mx-1) = 3 are equal if 3m + 4 = 0. Which term of the sequence -6,-2,2,... is 70? Find the term involving x in the expansion of (2x+3). (vii) Find the nth term of the H.P. 11 1 6'9'12'***** (viii) Prove that 2 Cos 0 -1 -1 -2 sin0 (ix) Solve x-1+x+4=5 (x) Simplify (a+b)+(ab)