PLZ HELP Which row operation will triangularize this matrix?
1 0 1 | 1
0 1 1 | 6
2 0 1 | 10

A) R1-R3
B)2R2-R3
C)-2R1+R3
D)2R1+R3
E)3R1+R3

Which polynomial correctly combines the like terms and expresses the given polynomial in standard form? 8mn5 – 2m6 + 5m2n4 – m3n3 + n6 – 4m6 + 9m2n4 – mn5 – 4m3n3 n6 + 7mn5 + 14m2n4 – 5m3n3 – 6m6 –2m6 – 5m3n3 + 14m2n4 + 7mn5 + n6 14m2n4 + 7mn5 – 6m6 – 5m3n3 + n6 n6 – 6m6 + 7mn5 + 14m2n4 – 5m3n3 show work