6 root20+8 root5-5root45

A50% increase followed by 33 1/2% decrease

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Find the value of x. give reasons to justify your solutions! l, m ∈ kn