Pleses find qaution no  

4,5,6

Find the following complex numbers in the form r+ iy, where r and y are real. 6. (i) (3+ 7i) + (6 10i) (ii) (5+ 7i) (6 10i) (3+ 2i)(3 5i) the modulus |1+ 5i| (ii) (iv) (v) the conjugate 1+ 5i 3+ 2i (vi) 1+5i [12 Marks|