ELLAMOH2015ZKZ ELLAMOH2015ZKZ Mathématiques Answered A = (2x + 3)-(3x + 5) - (-5x - 7) B= (a + 4) + (-4a - 5) + (-3-7a) C=-(3x²-x) - (-5x - 1)-(1+x²) D=4x²-3-(3x - 5x 2) - 2(x² - 8x)
