Simplifica :a) 3a – 4 + 2 – a + 5 =b) (2x2 – x + 1) + (4 – x2 – 3x) =c) 5 – (9x + 4) + (3 – 5x) =d) 5x2 – (4 – x + 4x2) – x2 + 6 =?
Simplifica : a) 3a – 4 + 2 – a + 5 = b) (2x2 – x + 1) + (4 – x2 – 3x) = c) 5 – (9x + 4) + (3 – 5x) = d) 5x2 – (4 – x + 4x2) – x2 + 6 =.
