Question

What is the discriminant of the quadratic equation7x^2-4x+5=0​

Answer 1

Answer:

$\Delta=-124$

Step-by-step explanation:

The discriminant for a quadratic in standard form is given by the formula:

$\Delta=b^2-4ac$

We have the equation:

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

Hence, a=7; b=-4; and c=5.

Therefore, our discriminant will be:

$\Delta=(-4)^2-4(7)(5)$

Evaluate. Hence, our discriminant is:

$\Delta=16-140=-124$

Notes:

Since our discriminant is negative, this tells us that the quadratic has no real roots.

Answer 2

Answer:

-124

Step-by-step explanation:

The discriminant is given by

b^2 -4ac  where ax^2 + bx+c =0

7x^2-4x+5=0​  so a = 7 b = -4 and c = 5

( -4) ^2 - 4(7) ( 5)

16 - 140

-124