6+6+5-6+2-7+10-1 divided by 3

Change negative exponents to positive. then solve. round to four decimal places

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.