[" 11.The number of values of "x" in the interval "[0,3 pi]],[2sin^(2)x+5sin x-3=0" is "]

The number of values of x in the interval [0,3 pi] satisfying the equation 2sin^(2)x+5sin x-3=0 is

The number of values of x in the interval [0, 3pi] satisfying the equation 2sin^2x + 5sin x- 3 = 0 is

The number of values of x in the interval [0, 3pi] satisfying the equation 2sin^2x + 5sin x- 3 = 0 is

The number of values of x in the interval [0, 3pi] satisfying the equation 2sin^2x + 5sin x- 3 = 0 is

The number of values of x in the interval [0, 3pi] satisfying the equation 2sin^(2)x + 5sinx - 3 = 0 is :