Home › AP EAPCET (Engineering) › Mathematics › Quadratic Equation › A parabola that is tangent to the x-axis shows t…
A parabola that is tangent to the x-axis shows that the quadratic has
ATwo complex conjugate roots
BTwo distinct real roots
CNo roots of any kind
DA single double root
Answer & Solution
Correct answer: D. A single double root
Touching the axis at one point means the discriminant is zero and both roots coincide.
Related questions
When the discriminant is zero, the two roots of a real quadratic areWhich is the quadratic coefficient in 5x² − 3x + 8 = 0?Subtracting two nearly equal numbers in the quadratic formula causesThe vertex x-coordinate of a parabola equals the mean of itsFinding the half-angle cosine from a known cosine involves solving aCritical points of a cubic function are found by solving aDescartes' theorem on four kissing circles gives their radii aConic sections such as the circle are all described by