a. 3xy + 5xy
b. 9x^2t - 7x^2t
c. 2xy + 6y + 8xy
d. 4_/x+3_/xy + 7_/xy-_/x
2006-11-07 05:57:02 · 4 answers · asked by alize2882 1 in Science & Mathematics ➔ Mathematics
a. 8xy
b. 2x^2t
c.10xy + 6y
d. 3_/x + 10_/xy
PS Don't forget to mention my name to your teacher.
2006-11-07 06:09:15 · answer #1 · answered by mailrick12 3 · 0⤊ 0⤋
a. 3xy and 5xy have like terms, so you can add them, getting 8xy.
b. Again, like terms. x^2t is the same in both, so subtract them getting 2x^2t
c. xy are like terms but the y by itself has no like term, so 10xy + 6y.
d. Not sure about your notation, but if you mean
(4/x)+(3/xy)+(7/xy)-(1/x), the 4/x and 1/x are like, and the 3/xy and 7/xy are like, so we get (3/x) + (10/xy)
2006-11-07 06:11:06 · answer #2 · answered by UMRmathmajor 3 · 1⤊ 0⤋
a) 8xy
b) 2x^2t
c) 10xy + 6y or maybe (10x + 6)y
d) 3_/x + 10_/xy
2006-11-07 06:08:47 · answer #3 · answered by Amy F 5 · 0⤊ 0⤋
a) 8xy
b) -2x^2t
c) 10xy + 6y
d) 3_/x + 10_/xy
2006-11-07 06:16:16 · answer #4 · answered by ag_iitkgp 7 · 0⤊ 0⤋