Question

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

Answer 1

Answer:

3x^2 + 4|x| +5=0. |x|= ±x. Now , we will get 2equations, 3x^2 +4x +5=0, 3x^2 -4x +5=0. If 3x^2 +4x+5=0. Then 3x^2 +4x+5=0, Here we will not get real roots of the equation, if 3x^2 -4x+5=0, Then 3x^2 -4x+5=0, Here also we will not get real roots,i.e the equation 3x^2 +4|x| + 5=0, has no real roots. Hope this helps you