Question

Find the value of discriminant.   root 2x2 + 4x + 2= 0​

Answer 1

Answer:

D=0

Step-by-step explanation:

D = b^2 - 4×a× c = 4^2 - 4×2×2 =16-16 = 0

D = 0

Answer 2

EXPLANATION.

Quadratic equation.

⇒ 2x² + 4x + 2 = 0.

As we know that,

⇒ D = Discriminant  Or b² - 4ac.

⇒ D = (4)² - 4(2)(2).

⇒ D = 16 - 16.

⇒ D = 0.

Nature of roots are real and equal, D = 0.

                                                                                                                         

MORE INFORMATION.

Nature of the roots of the quadratic expression.

(1) = Real and different, if b² - 4ac > 0.

(2) = Rational and different, if b² - 4ac is a perfect square.

(3) = Real and equal, if b² - 4ac = 0.

(4) = If D < 0 Roots are imaginary and unequal Or complex conjugate.