Question

Q5.
If b2 - 4ac = 0, then roots of ax2 + bx + c = 0 are​

Answer 1

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.