Factorise: 84-2r-2r^2 Share with your friends Share 2 Manbar Singh answered this The given polynomial is, 84 - 2r - 2r2=-2r2 - 2r + 84=-2r2 + r - 42 middle term split=-2r2 + 7r - 6r - 42=-2rr + 7 - 6r + 7= -2r - 6r + 7=26 - r7 + r 30 View Full Answer
