Find the positive value of n such that the equation 9xˆ2+nx+1=0 has exactly one solution in x.
If you use the quadratic formula to solve for this quadratic....you will see that when the term
sqrt(b^2-4ac) is equal to ZERO , you will have only ONE x root
so n^2 - 4(1)(9) = 0 Solve for n
n^2 = 36
n = 6