SOLUTION: Without calculating the roots, determine the number of roots of 4x squared-x+9

Question 1117111: Without calculating the roots, determine the number of roots of 4x squared-x+9
Found 2 solutions by ikleyn, Alan3354:
Answer by ikleyn(52879)   (Show Source): You can put this solution on YOUR website!
.
Answer.   No real roots.

Solution

Discriminant d = b^2 - 4ac = (-1)^2 - 4*4*9 = 1 - 4*4*9 is negative, which means that there are no real roots (both roots are complex numbers).

Solved.

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Without calculating the roots, determine the number of roots of 4x squared-x+9
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It's a quadratic, 2nd order.
All quadratics have 2 roots.

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