Hi there! In the quadratic function, there are three types of solutions.
- two real roots
- one real root
- no real roots (complex roots)
To find the solution by graph, what we have to do is to see if a graph intersects a x-axis plane or not. If it doesn't, that means a graph clearly doesn't have solutions.
As we see in the picture, the graph of function doesn't intersect x-axis and thus there are no real roots.
Answer