For what values of m does the graph of y=3x^2+7x+m have two x-intercepts?

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)

How do i simply this radical expression?