@ Express 21 in the Form a t by, where aber If i 2) All set of possible rational zeros OF FCy= 2x4-213+6212 53-8 3 Use descarters' Rule OF Signs to Find the possible number OF zeros OF P (x) = 2x5+ 3(4+ 25-42-2-6 4 Go) + DC - 3 into Partial Fractions An aeroplane flies at a ground Velocity ( ine Velocity relative to the ground ) of 30 0km / h Nso W , in a wind blowing at a velocity OF 50km/ Nao'E. What is the velocity OF the plane relative to the ground.? Convert 1 - i into trigonometric form 2 2 = 8 ( Cos So + isinsk , then zo is equal to ? White 30 Write 2-Bo 8 Write 21 = 13 + 1 and 22 = 1 - i in trigonometric Form Then then the argument of the quotient 21 is given by? Z z 9 Solution For 22+ 16 ( = 0 ? 10 Convert ( V 3 ; -1) into polar coordinates ( 9 ) so that 20 and OZO 5 27