Let A={5,6,7,8,9,10} and B={x:x is root of the equaltion `x^(2)-11x+30=0)`. Show that `A cup B=A`

Explanation

To solve the problem, we need to show that \( A \cup B = A \) where \( A = \{5, 6, 7, 8, 9, 10\} \) and \( B \) consists of the roots of the equation \( x^2 - 11x + 30 = 0 \).

### Step-by-Step Solution:

**Step 1: Identify the sets A and B.**
- We have \( A = \{5, 6, 7, 8, 9, 10\} \).

**Step 2: Solve the quadratic equation to find the roots for set B.**
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