Question

19.
Number of real roots of the equation 3x^2 +4|x|+5=0 are
(A) 2
(B) 4
(C)0
(D)-1

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Answer 1

Answer:

smart math

Step-by-step explanation:

C is the correct answer

Answer 2

Step-by-step explanation:

Given Number of real roots of the equation 3x^2 +4|x|+5=0 are

• The number of the real roots for the equation  is to be found
•    So we have 3x^2 + 4x + 5 = 0
•                     So the quadratic equation is ax^2 + bx + c
•                                  b^2 – 4ac
•                                  4^2 – 4(3)(5)
•                                   16 – 60
•                                        = - 44 < 0
•          So we have x = - b +-√b^2 – 4ac / 2a
•                    Now we have a = 3, b = 4, c = 5
•                               x = - 4 + - √(4)^2 – 4(3)(5) / 2(3)
•                               x = - 4 + - √16 – 60 / 6
•                                  x = - 4 + - √- 44 / 6
•                                   x = (- 4 + - 2√- 11) / 6
•                                  Or x = (-2 + - i√11) / 3
• So we get imaginary roots for the equation given and the real roots are 0.

Reference link will be

https://brainly.in/question/16925238