1) b² + 20b = b(b + 20)
2) 9m³ + 2m = m(9m² +2)
3) - 7x² + 2x = - x(7x - 2)
4) x³ - 3x² = x²(x - 3)
5) 5x²(3x - 8) + 10x(3x - 8) = 5x(3x - 8)(x + 2)
6) 6d²(2d - 5)² - 12d²(2d - 5)(d + 5) = 6d²(2d - 5)(2d- 5- 2d -10) =
=6d²(2d - 5)* (-15) = - 90d²(2d - 5)
решение на фото
Объяснение:
....................
в конце там (2d-5)
1) b² + 20b = b(b + 20)
2) 9m³ + 2m = m(9m² +2)
3) - 7x² + 2x = - x(7x - 2)
4) x³ - 3x² = x²(x - 3)
5) 5x²(3x - 8) + 10x(3x - 8) = 5x(3x - 8)(x + 2)
6) 6d²(2d - 5)² - 12d²(2d - 5)(d + 5) = 6d²(2d - 5)(2d- 5- 2d -10) =
=6d²(2d - 5)* (-15) = - 90d²(2d - 5)
решение на фото
Объяснение:
....................
в конце там (2d-5)