Solve the radical equation x-4 - 1 = 5

Which compound inequality could be represented by the graph?

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?