Question

How many times does the quadratic function below intersect the x-axis?
y = x2 + 3x +15

Answer 1

Answer:

Assuming you meant y = 2x + 3x +15, answer is: once at (-3,0)

Step-by-step explanation:

For solution, factor and solve for x.

2x + 3x + 15 factored is 5(x+3).

Solving for x, set x+3 = 0 which becomes x = -3.