Find the sum of the following polynomials and write the degree of the sum so obtained
(i) 2x3 7x2 + 3x + 4 ; 2x3 3x2 + 4x + 1
(ii) 3x2 + 5x x7 ; 3x2 + 5x + 8
(iii) x4 + 5x3 + 7x ; 4x3 3x2 + 5
(iv) y2 + 2y 5 ; y3 + 2y2 + 3y + 4 ; y3 + 7y 2
(v) 5m2 + 3m + 8 ; m3 6m2 + 4m ; m3 m2 m + 5