373 a - b 8b⁴ (a - b) * 4b³ * 2b 2b--------- * -------------- = ------------------------- = --------- 4b³ a² - ab a* (a - b) * 4b³ a--------------------------------------------------------------------------------------------------- x² - 4y² 28x² (x - 2y)*(x + 2y) * 4x * 7x------------- * ---------------------- = ------------------------------------- = 35xy x² - 4xy + 4y² 5y * 7x * (x - 2y)² 4x* (x + 2y) 4x² + 8xy= --------------------- = -------------------- 5y * (x - 2y) 5xy - 10y²-------------------------------------------------------------------------------------------------- ax + ay + 2y + 2x 6 (x * (a + 2) + y (a + 2)) * 6-------------------------- * ------------------ = ---------------------------------------- = 2a + 4 5x + 5y 2*(a + 2) * 5 * (x + y) (a + 2) * (x + y) * 6= ------------------------------ = 6 / 10 = 0,6 10 * (a + 2)* (x + y)------------------------------------------------------------------------------------------------- 5 (2 - a) * (2 - a) * 5 10 - 5a 5a - 10(2 - a)² * ---------------- = -------------------------- = ---------------- = --------------- ab - 2b -1 * b * (2 - a) -b b------------------------------------------------------------------------------------------------373) m² - 4n² (m + 2n)² (m + 2n)*(m - 2n) 9m²------------- : ---------------- = ------------------------- * ---------------------------- = 3mn 9m² 3mn (m + 2n)*(m + 2n) (m + 2n)*(m - 2n) * 9m² (m - 2n) * 3m 3m² - 6mn= ------------------------------------ = --------------------- = ----------------- (m + 2n)*(m + 2n) * 3mn (m + 2n) * n 2n² + mn---------------------------------------------------------------------------------------- 2x² - xy x + y (2x - y) * (x + y)(2x - y) : ---------------- = (2x - y) * -------------- = ----------------------- = x + y 2x² - xy x * (2x - y) x + y= ------------ x-------------------------------------------------------------------------------------------------- a³ - 1 2a² + 2a + 2 (a - 1) * (a² + a + 1) 5a²------------ : -------------------- = --------------------------- * ------------------------ = 2a³ 5a² 2a³ 2 * (a² + a + 1) (a - 1) * (a² + a + 1) * 5 * a² 5 * (a - 1) 5a - 5= ---------------------------------------- = ---------------- = --------------- 2 * (a² + a + 1) * 2a * a² 4a 4a------------------------------------------------------------------------------------------------ a² - 9 a + 3 (a + 3) * (a - 3) 9 * (a + 2) * (a² - 2a + 4)---------------- : ---------------- = ----------------------- * ------------------------------------- = a² - 2a + 4 9a³ + 72 a² - 2a + 4 a + 3 (a + 3) * (a - 3) * 9 * (a + 2) * (a² - 2a + 4) = ----------------------------------------------------------- = (a - 3) * 9 * (a + 2) = (a + 3) * (a² - 2a + 4) = 9 * (a² + 2a - 3a - 6) = 9 * (a² - a - 6) = 9a² - 9a - 54