Question

1) (14+ a)(a - 14); 2) (12x+11y)(11y - 12x); 4 3) (6x³y - 2xy¹) (6x³y - ²xy¹) 4) (a²-b²)(a² + b²)(aª + b^); 3 5) (1,5a³+²y³) (y³ −1,5a³)...Подайте у выгляди многочлена!Здать сегодня срочно даю 40 балов​

Answer 1

1. (14 + a)(a - 14) = a(a - 14) + 14(a - 14) = a² - 14a + 14a - 196 = a² - 196
   
2. (12x + 11y)(11y - 12x) = 12x(11y) + 11y(-12x) = 132xy - 132xy = 0
   
3. (6x³y - 2xy) (6x³y - ²xy) = (6x³y)² - (2xy)² = 36x⁶y² - 4x²y² = 4xy²(9x⁴ -1)
   
4. (a² - b²)(a² + b²)(a + b) = (a⁴ - b⁴)(a + b) = a⁵ + a⁴b - ab⁴ - b⁵
   
5. (1.5a³ + 2y³)(y³ - 1.5a³) = (1.5a³)² - (y³)² = 2.25a⁶ - y⁶