Question

Someone help pleasee

Answer 1

-80

Explanation:

We can write the quadratic as

ax^2 + bx+c

4x^2 +8x+9

a=4 b = 8 c=9

The discriminant is

b^2 -4ac

8^2 - 4(4)(9)

64 - 144

-80

Answer 2

-80

Explanation:

The discriminant is the value under the radical in the quadratic formula. The part of the quadratic formula that is under the radical is
`√(b^2-4ac)`. So, plug in the needed values and solve for what is under the radical. The b-value is 8; this squared is 64. Then, plug in a and c, 4 and 9. Then multiply these by 4, 4*4*9=144. Finally subtract, 64-144=-80.