find the sets of valuse of x for which 4x^2 + 19x - 5 <= 0
4x^2+19x-5 = (4x-1)(x+5)
The roots (places where the graph crosses the x-axis) are -5 and 1/4
So, where do you think the value is negative?
The roots (places where the graph crosses the x-axis) are -5 and 1/4
So, where do you think the value is negative?