Quadratic Equations, given sample test case gives wrong output
HI Ananya there are a few mistakes in your code.
Firstly, use sqrt function instead of pow.
Secondly, you are not evaluating roots correctly.
When the 2 roots are real, then let it be:
x1 = - b/(2*a);
when they are distinct you have to print smaller one first and then the larger so let it be:
x1= -(b+sqrt(d)) / (2a);
x2= -(b-sqrt(d)) / (2a);
// Note here x1 < x2 always.
Make these changes.
Your code will pass all the testcases now 
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