Question

1) 16y^3+7y-(18y-6y^3)=
2) (2x+3)×(2x-5)=
помогитеее пожалуйста...^_^

Answer 1

1) 16y³ + 7y - (18y - 6y³) = 16y³ + 6y³ + 7y - 18y = 22y³ - 11y = 11y(2y² - 1)

2) (2x + 3)(2x - 5) = 4x² + 6x - 10x - 15 = 4x² - 4x - 15