Question

If the discriminant of quadratic equation b ² - 4ac = 0 then the rouls are​

Answer 1

Answer:

0

Step-by-step explanation:

1. If b2 - 4ac = 0 then the roots will be x = −b±02a = −b−02a, −b+02a = −b2a, −b2a. Clearly, −b2a is a real number because b and a are real. Thus, the roots of the equation ax2 + bx + c = 0 are real and equal if b2 – 4ac = 0

Answer 2

Answer:

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Step-by-step explanation:

1. If b2 - 4ac = 0 then the roots will be x =

-b±02a = -b-02a, -b+02a = -b2a, -b2a. Clearly, -b2a is a real number because b and a are real. Thus, the roots of the equation ax2 + bx + c = 0 are real and equal if b2 - 4ac = 0.