Problem
Given the polynomial expression \(2x^{2} - 3x + 5\), evaluate the expression when \(x = 3\).
Solution
Step 1 ：Substitute \(x = 3\) into the polynomial expression, so we have \(2*(3)^{2} - 3*3 + 5\).
Step 2 ：Calculate the square and multiplication, we get: \(2*9 - 9 + 5\).
Step 3 ：Perform the operations in the correct order (BIDMAS/BODMAS), so we have: \(18 - 9 + 5\).
Step 4 ：Finally, subtract and add to get the answer: \(9 + 5\).
