Question

Does anyone know this?

Answer 1

Answer:

-124

Step-by-step explanation:

The equation for a discriminant is:

$b^{2} -4ac$

So for

$7x^{2} -4x +5=0$

a = 7         b = - 4          c = 5

Plug values into the equation.

$(-4)^{2} -4(7)(5)$

16 - 140 = -124

Answer 2

Answer:-124

Step-by-step explanation:

b^2 - 4ac

a = 7  b = -4   c = 5

-4^2 - 4*7*5

16 - 4*35

16 - 140

-124