Question

what is the value of the discriminant of the quadratic equation -2x^2 -8x+8 and what does it value mean about the number about the number

Answer 1

Answer:

0

Step-by-step explanation:

It is been considered that Discriminant is calculated by the following formula:

D = b*b - 4 * a * c

In order to simplify the calculations we can divide all the numbers by 2 and we will have the same quadratic equation:

-x^2 -4x+4=0

and as usual quadratic equation is presented as the following:

ax^2 - bx + c = 0

so in our case a = -1; b = -4; c = 4;

Then D = -4*4 -4*(-1) * 4 = -16+16 = 0

I am not quite understanding the following phrase:

"and what does it value mean about the number about the number"

but if the question was in regards of the following number '-2x^2' so number ^2 is actually the value of power so 'x' is multiplied on it is own and this equation basically means the following:

-2x^2 = -2 * (x) * (x)