ADDITION OF POLYNOMIALS

(2r4 + 3r3 - r2 + 5r + 4)  +  (3r4 + 4r2 -2r - 7)

(REMEMBER WE CAN ONLY ADD LIKE TERMS - 2r4 and 3r4 are like terms
because the variables and exponent are the same. 3r3  and 4r2  are unlike terms because their
exponents are different and hence cannot be combined. )


2r4 + 3r3 - r2 + 5r + 4  +  3r4 + 4r2 -2r - 7

2r4 + 3r4 + 3r3 + ( -r2 ) +4r2 + 5r +  (-2r)  + 4 + (-7) = 5r4 + 3r3 + 3r2  +3r + (-3) = 5r4 + 3r3 + 3r2  +3r - 3
Try these: