Al simplificar las expresiones dadas se obtiene : 1).
4p + 5p –7p = 2p2).
9x ^ 2 – 3x + 5x – 5x ^ 2 = 2x(2x + 1)3).
(mn ^ 2 – 4m + 3m ^ 2) · 2 – [– (m ^ 2 n + 4m ^ 2 – n ^ 2) + 3m] = m²(n + 10) + 2m(n² - 4) - n(n + 3)4).
( - 1 / 5)[(2 / 3 x + 4 / 3 x) - (1 / 2x + 9 / 2x)] = (3 / 5)x5).
- 1 / 3 (x / 4 + y / 2 + z) + ( - x - y - z) = - (1 / 3)((13 / 4)x + (7 / 2)y + z)Resolución de las expresiones algebraicas 1).
4p + 5p –7p = p(4 + 5 - 7) = > 4p + 5p –7p = 2p 2).
9x ^ 2 – 3x + 5x – 5x ^ 2 = x²(9 - 5) + x( - 3 + 5) 9x ^ 2 – 3x + 5x – 5x ^ 2 = 4x² + 2x = > 9x ^ 2 – 3x + 5x – 5x ^ 2 = 2x(2x + 1) 3).
(mn ^ 2 – 4m + 3m ^ 2) · 2 – [– (m ^ 2 n + 4m ^ 2 – n ^ 2) + 3m] = - = 2mn² - 8m + 6m² + m²n + 4m² - n² - 3n = - = m²(6 + 4) - 8m + 2mn² + m²n - n² - 3n = - = m²(n + 10) + 2m(n² - 4) - n(n + 3)4).
( - 1 / 5)[(2 / 3 x + 4 / 3 x) - (1 / 2x + 9 / 2x)] = ( - 1 / 5)(6 / 3x - 10 / 2x) = ( - 1 / 5)(2x - 5x) ( - 1 / 5)[(2 / 3 x + 4 / 3 x) - (1 / 2x + 9 / 2x)] = (3 / 5)x5).
- 1 / 3 (x / 4 + y / 2 + z) + ( - x - y - z) = - x / 12 - x - y / 6 - y - z / 3 - z = - = - x(1 / 12 + 1) - y(1 / 6 + 1) - z(1 / 3 + 1) = - (13 / 12)x - (7 / 6)y - (4 / 3)z - 1 / 3 (x / 4 + y / 2 + z) + ( - x - y - z) = ( - 1 / 3)((13 / 4)x + (7 / 2)y + 4z).