Question

спростити 2приклади ​

Answer 1

5х²(х-3)+15х²=5х³-15х²+15х²=5х³

3а(а²-а+2)+3а³-6а²=3а³-3а²+6а+3а³-6а²=6а³-9а²+6а

Answer 2

Объяснение:

5х²(х - 3) + 15х² = 5х³ - 15х² + 15х² =

5х³ + (-15х² + 15х²) = 5х³ + 0 = 5х³

3а(а² - а + 2) + 3а³ - 6а² =

3а³ - 3а² + 6а + 3а³ - 6а² =

(3а³ + 3а³) + (-3а² - 6а²) + 6а =

6а³ + (-9а²) + 6а = 6а³ - 9а² + 6а