Question

find the value of discriminant of the equation
2xsq. - 5x+ 7 =0
​

Answer 1

Answer:

1.4

Step-by-step explanation:

-5x+7=0

-5x = -7

-5x/5 = 7/5

-x = -1.4

x = 1.4

Answer 2

Answer :

Discriminant = -3

Solution :

Given,

Quadratic Equation :

2x² - 5x + 7 = 0

Discriminant of a quadratic equation (∆) ,

→ b² - 4ac

In the given equation,

a = Co-efficient of x² = 2

b = Co-efficient of x = -5

c = constant term = 7

Discriminant = b² - 4ac

→ b² - 4ac

→ (-5)² - 4(1)(7)

→ 25 - 28

→ -3

Therefore,

$\boxed{Discriminant = -3}$

As the discriminant is less that zero, the roots of equation will be imaginary.