tentukan suku kata yang sejenis
[tex]1a. \: \: 7x + 2y - {x}^{2} + {5x}^{2} y - 3y \\ = 7x + (2y - 3y) - {x}^{2} + 5 {x}^{2}y \\ = 7x - y - {x}^{2} + {5x}^{2} y[/tex]
[tex]1b. \: \: 6p^{3} - 4p^{2} + 8p - 3p ^{3} + 5p - 9 \\ = (6p^{3} - 3p^{3} ) - 4p^{2} + (8p + 5p) - 9 \\ = 3p^{3} - 4p^{2} + 13p - 9[/tex]
