1) -12a²b2) x² + 3x - x² - 1x = 2x - x = x1) (x+5)(x-5)/(x-5) = x+52) (x+3)²/(x-3)(x+3) = (x+3)/(x-3)
1) -12a²b
2) x² + 3x - x² - 1x = 2x - x = x
1) (x+5)(x-5)/(x-5) = x+5
2) (x+3)²/(x-3)(x+3) = (x+3)/(x-3)