If `(1-p)` is a root of quadratic equation `x^2+p x+(1-p)=0,` then find its roots.

Explanation

To solve the problem, we need to find the roots of the quadratic equation given that \( (1 - p) \) is one of its roots. The equation is:

\[ x^2 + px + (1 - p) = 0 \]

### Step 1: Substitute the root into the equation
Since \( (1 - p) \) is a root, we can substitute \( x = 1 - p \) into the equation:
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