But both of these are equal to -b. The number of real solutions depends on how many times the graph crosses the x -axis. No real solution happens when they never intersect One real solution when the straight line just touches the quadratic Two real solutions like the example above.
No real solution happens when they never intersect One real solution when the straight line just touches the quadratic Two real solutions like the example above.
If it doesnt cross. Ax 2 bx c 0. The number of real solutions depends on how many times the graph crosses the x -axis. A quadratic can have two real solutions one real solution or two imaginary solutions.