Question

Determine nature of roots of the quadratic equations.

2x2 - 5x + 7 = 0​

Answer 1

$\huge\star\mathfrak\pink{{Answer:-}}$

Solution : Compare 2x2 - 5x + 7 = 0 with

ax2 + bx + c = 0

a = 2, b = -5 , c = 7 ,

-b2 - 4 ac = (-5)2 - 4 ´ 2 ´ 7

D = 25 - 56

D = -31

-b2 - 4 ac < 0

- the roots of the equation are not real

Answer 2

Step-by-step explanation:

b2-4ac=25-4×2×7=25-56=-31

Therefore the roots are unreal.