Question

6. Find the nature of roots of ax + bx+c= 0, a>0,b= 0,c> 0.
- Is x=-3 a solution of r? + 6x + 9 = 0?
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Answer 1

Answer:

Thus, the roots of the equation ax2 +bx + c = 0 are not real if b2 - 4ac < 0. As the value of b2 - 4ac determines thenature of roots (solution), b2 - 4ac is called the discriminant of the quadratic equation.

Answer 2

Answer:

Thus, the roots of the equation ax2 + bx + c = 0 are real and equal if b2 – 4ac = 0.