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jok3333 [9.3K]
3 years ago
9

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

Mathematics
2 answers:
Makovka662 [10]3 years ago
8 0

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.

Vadim26 [7]3 years ago
4 0

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

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