What is the value of the discriminant for the quadratic equation –3 = –x2 + 2x? Discriminant = b2 – 4ac –8

Step-by-step explanation:

The discriminant of a quadratic in standard form is given by .

The quadratic in standard form is . Thus, we can assign the following values:

Therefore, the discriminant of this quadratic is

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,