Question

what is the discriminant of 4x^2=5x-4=0​

Answer 1

Answer:

-39

Step-by-step explanation:

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Algebra Examples

Popular Problems Algebra Find the Discriminant 4x^2-5x+4=0

4

x

2

−

5

x

+

4

=

0

The discriminant of a quadratic is the expression inside the radical of the quadratic formula.

b

2

−

4

(

a

c

)

Substitute in the values of

a

,

b

, and

c

.

(

−

5

)

2

−

4

(

4

⋅

4

)

Evaluate the result to find the discriminant.

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Simplify each term.

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Raise

−

5

to the power of

2

.

25

−

4

(

4

⋅

4

)

Multiply

4

by

4

.

25

−

4

⋅

16

Multiply

−

4

by

16

.

25

−

64

Subtract

64 from 25.

−39